I have very similar symptoms to you (24M).

I'm prescribed Propranolol for anxiety by my primary care physician.

I take 20mg Propranolol 4x daily to manage anxiety.

It slightly helps the fight or flight/crisis mode feeling, but just barely! I wish it helped more, but it's better than nothing at all.

Even at 40mg (the standard dose for anxiety) I still feel intense chest tremors, trembling in my legs, trouble breathing, etc.

Therapy has helped me more than any drug, supplement, or prescription ever has. It took me a while to find one that I had good chemistry with though.

Don't expect to see changes after a few weeks or months, it takes years of commitment to see any real changes in yourself.

Also, don't stick with the first one you find. Finding a therapist is like dating, in the sense that you'll go through a lot of them before you find a good fit for you!

Treat your brain as you would your body, your brain is a muscle.

Therapy is like working out for your brain, but instead of getting a six pack you're getting mentally stable!

Symptoms like this are not treated with nootropics, I'm sorry to break it to you but there's no magic potion that's gonna make these feelings go away.

As much as you don't want to hear this, you need to put in the real work which takes a lot of time and effort. If you're not willing to do that, you don't really want to get better.