I know what you mean. I've been doing Salvia recently, and it shows me many illusions I take for granted. It's healthy, because it helps you see what you do that is arbitrary and silly. It's best not to get caught up in existential thought about it though. Though much of our reality is paper-thin illusion, we still have purpose, unique and beautiful identities, and we are able to feel love. Just remember to feel good/do what feels good and remember that you still have an important, beautiful niche to fill in the universe, and no one else is going to fill that place for you.
Just be, or do, or love, but for heavens sake don't overthink it.
The world isn't an evil place. Salvia just shows us that much of it is silly and arbitrary. Remember to laugh.