Personally I find benzos help IN THE MOMENT of an anxiety attack, but daily use of cannabis and occasionally kratom are 2 natural methods I use.
Cannabis is a good suggestion. Use a mix of THC and CBD, preferably 1:1 or slightly more CBD than THC. THC alone without CBD can increase anxiety for some people.
I'd have to advise against Kratom as it seems to be more trouble than it's worth. Like many opioids, it suppresses production of hormones such as testosterone by over 50%. PsychedSubstance is a pretty well known YouTuber in the psychedelic community who had to start taking TRT after years of periodic daily Kratom use because his (adult man in his 30s/early 40s) testosterone levels had plummeted and he was suffering severe physical + mental effects as a result.
I've personally used Kratom a few times. It's great for pain but when I tried white kratom for focus I just got a stomachache and it did nothing for my productivity. I'd recommend everyone limit their use of kratom only to situations where traditional opioids would be used (moderate to severe pain and injury) or to taper off of opioids. It isn't worth the long term side effects outside of those use cases.
You can also look into psychedelic studies. E.G. MDMA or ketamine therapy.
This would be my #1 suggestion. Ketamine eliminates 90% of my depression, suicidality, intrusive thoughts, and anxiety in the days following a trip. MDMA has permanently improved my PTSD, depression, and anxiety.
Classical psychedelics such as LSD, psilocybin/psilocin analogues, and DMT are also great. I've personally had great success with them.
Microdosing can be very helpful for a lot of people as well. If there aren't any studies available where you live, you can look into the legality of research chemicals such as 1P-LSD or acquire any of the above substances through other methods. If you choose to go down that route, ensure that you purchase a test kit prior to using.
Phenibut can be helpful (I personally find it less effective and more recreational than benzos) but the physical addiction can set on even faster and isn't much (if at all) less severe.
Finally, something like Clonidine could be helpful. It's an a2 agonist that is primarily used for PTSD, ADHD, and high blood pressure but can also be used for insomnia and anxiety. It's quite mild but it's my personal go-to for insomnia and I've used it for PTSD-related panic attacks a couple times.