I absolutely believe you!!!
I had a lot happen to me, especially when I was younger. I've lived in haunted houses, have seen strange things, had many odd occurrences. I use to live in the country a lot in Alabama and Wisconsin growing up, so I played outside in the woods and by the rivers and isolated places a lot too. Seen some weird things out in nature.
I understand some people's skepticism some times, as a lot of people out there have tainted the paranormal with making fake shit for attention. But I suppose if I hadn't experienced it myself, I would have a hard time believing it too.
I think there are enough reports of people saying something weird happen to them and a percentage of these people are most likely telling the truth or at least believe what happened to them.
Thankfully I've had a number of experiences where there were witnesses, so I don't have to feel like it was just me being crazy. I enjoy telling people my experiences (provided I know that they know I'm serious and not lying) because they're just wild as fuck and have no explanation and if I really had to, I could call up the person who witnessed it with me and get them to talk. lol
I've struggled with sleep paralysis my whole life too. Until I learned that sleeping on your back can cause it to happen more often, so I started sleeping only on my sides and with pillows all around me to keep me from rolling onto my back. They've stopped since I've done this mostly, but I swear I recall at least twice waking up with it even though I was still on my sides, which freaked me out cause I figured it couldn't happen if I slept on my side. I hate that shit though, it's always traumatizing to go through, even if I don't see any crazy beings anymore during the experiences. Hopefully you've been able to resolve yours some!
I actually wish I knew enough people who were as interested in this crazy shit in real life, that I could assemble a team and we could all go get high and explore this shit. haha When I was young and growing up in the country, me and my friends use to sit out in the woods and drive our car around in the woods and have bon fires in fields and no one ever bothered us (this was in Wisconsin), then I moved to a place in Iowa where if you even dared to go for a walk late at night you'd have the cops pulling you over asking you what you were doing! I often miss that freedom to roam around and explore nature and abandoned shit that I had when I lived in the country in Wisconsin by the river.
I have so many crazy stories myself too, from disembodied breathing that happened to me and my mom for the course of a few weeks at this old house. The strange thing is I had an asshole stepdad who ended up with emphysema and he ended up on oxygen and would often breathe exactly like how this disembodied breathing sounded (this was long after he had moved out when I was 12 and presumably died from his emphysema, possibly around the time we heard this breathing sound). But it appeared to me one night in the kitchen while I was on the computer. Probably like 4AM in the morning. It sounded like some one was standing next to me and breathing very sickly. I got up and tried to figure out where the sound could be coming from, like a logical explanation and that's when I realized the sound was moving. I'd walk towards a corner of the kitchen where it sounded like it was at and then once I got there, it would suddenly be behind me. I got totally creeped out and ran upstairs to my bedroom and stayed there til morning. I went down when the sun came out and my mom had woken up and I went to her and told her I wanted to tell her about something. And she said she had something she wanted to tell me about too. So she told me to go first and I told her what I had heard and her jaw dropped and she proceeded to tell me that she was going to say that for the past few mornings, she had been waking up and going on the computer with her coffee in the morning and she swore she was hearing this breathing sound in our kitchen!!!! After that, this breathing sound came around like CLOCKWORK every single night for about the next 2-3 weeks, always in the middle of the night. It got to be so bad that one night I finally broke down and I screamed at it really aggressively to "leave us the fuck alone!" and it immediately stopped and went away! How the fuck does anyone explain that one!
My stepdad was a very evil person. He was a Mississippi redneck who always talked about being in the Freemasons. He was very physically abusive towards me & just very evil. He would choke me and hit me in the face with his sandals for just 'being too loud'. He caught emphysema and once I got to be about 12, I was able to get away from him cause he couldn't walk more than a few steps without running out of breath. I don't know if that was him coming back or what. Could have been. He lived in that house with us for about a year and then he moved in with his daughter one weekend while we were visiting one of my sisters and he left my mom. He died some time not long after that but I don't know exactly when, cause quite a few months when by before my mom even knew how he was or that he was dead. Nobody in his family bothered to let her know. We had had paranormal things happening in that house and the previous house before he died though. So I don't know what or who exactly it was, but the sound reminded me of that sickly inhaling and exhaling my stepdad would do when he was out of breath. Exactly like a sick person inhaling through their nose and then exhaling that breath & making a mild whistling sound, is what it sounded like. I had heard a disembodied voice saying my name in that house too when my stepdad was still living there as well, so I dunno. Thank god some one else heard this or I would have just had to chalk it up to me being crazy when I was younger. lol Me and my mom once in awhile still bring up this breathing sound to each other.
And that is only ONE of my experiences!! lol There was another time me and my friends were chased by something screaming at us in the woods! And the area where this thing came from is where that friends brother later on crashed his car and then walked to his dads and shot himself in the head! And no one knew why! And a time I think I saw Bigfoot. lol But I don't want to ramble too much more than I already have!

It seems though now that I'm in my 30's that a lot of the paranormal things tapered off and mostly happened when I was a teenager or a young kid.
There is definitely some crazy shit out there! I don't think we "regular" folks (maybe the government knows) know the real truths about how our world and reality works. I totally believe you've experienced shit you cannot explain and you are very much not alone in having these bizarre experiences.