Not sure from where you came in just now ... But I'm sorry brother, this is quite an uneducated opinion.
The problems you had from ssri's are probably because you started off with a to big of a dose. Starting gradually, like 2.5 mg's of escitalopram (or even less) for the first 4 weeks, or more, what ever feels comfortable, and then increase to 5mg ... is the way to go.
It's also not factually accurate to say that ssri's increase anxiety for the first 6 to 12 weeks. They decrease anxiety, for the first week, then they increase it a bit and then it decreases again. This happens in a matter of 3 to 4 weeks. Again, starting off with a low dose is key.
Same goes for going off ssri's. You don't just take half the dose one day and suffer withdrawal. You take 5% less for a week, then 5% less for the next week, etc. I guarantee, you wont have any withdrawals this way. But if you do, then go at it at an even slower pace.
Microdosing shrooms and acid has it's benefits for sure. But I can almost guarantee, that it wont help in the long run. Microdosing is the next hype, like cbd for example (which works wonders for me, but unfortunately you need to up the dose pretty soon), but is again very unlikely to be a permanent solution. And the rewiring happens at large, trip dosages, not really with microdosing. Mind you, rewiring also happens with ssri's, and it's more likely for it to be a sustainable treatment for people with chronic anxiety. Not everybody has the intellectual and spiritual proves to be able to trip on heavy dosages. But if you do, give it a go, just be careful, start small and gradually build up.