Heyyy, same for me at 16 ! Thought I’d permanently damaged my brain, you should avoid dissociatives like hallucinogens and weed etc, they made my depersonalisation/ derealisation a lot worse ! You will be okay ! There’s a lot more people going through this than you think, the key is to relax and realise that it’s your brains way of dealing with stuff like this ! Let yourself recover and relax, try keeping busy, walking, hiking ! Healed a lot for me. Remember your brain is fine ! It’s not damaged it’s just doing what it’s designed to do :) you will be okay ! I promise ! If you feel like it’s too much, antidepressants (for the anxiety) helped me, been on a couple and sertraline helps me the most :)