so, i can only reflect my own experience. i was burned in a fire, 3rd degree, developed major clinical PTSD, also have GAD, my own course through this shit has been long, and difficult. I tried for many years medicating with ethanol, benzos etc. --- my experience is that i could not really take enough of any GABA agent to siufficiently medicate my symptoms (let alone the fact that in the US at least, people are being thrown systemically off of long term benzo rxes. they are coming after them as they did opioids 8 years ago. My mom is currently in process of being thrown off a 30+ year benzo Rx, ive had to do support for countless people across the country dealin w that shit) - and in fact that attempting to medicate the symptoms of the anxiety both kept me from pursuing some other solutions, and made my anxiety worse and worse as the GABA PAM agents did progressive damage to my GABA systems.
I was terrified when i was ordered off the benzos as well. What I have found though, is that it truly was keeping me from reaching deeper resolution on the anxiety issues, and making them worse over time. Since then, althought the withdrawal was crippling, I am glad i got a long taper/was able to take care of it in a reasonable way instead of been thrown off without time to deal with the taper. I have found that workin w therapists that i could actually work with (took me like 12 people to find people ACTUALLY versed in severe anxiety and trauma recovery) - CBT, EMDR and a few other treatment modalities really helped me towards resolution. Ibogaine was integral in repairing the PTSD/TBI damage. but long story short - i found no relief long term in the GABA agents, and indeed now for my life, I can see how treating the symptoms of anxiety was not handling shit. I really had to find ways to address my underlying issues to find good relief.
Outside of that, modifying diet, really increasing exercise, and getting my GABA receptors healed is what actually helped. Also I have found non-damaging relief in kava kava and amanita (the muscimol specifically) if i need help and don't want to damage my brain further. Also propranolol I find AMAZING for dealing w the physical side of my anxiety. which really assists me in using actual coping tools for dealing w the mental part,
Either way, I know this is a super personal journey, and I hope you get some resolution fr.