Well, sorry for my grammar, not a native speaker. But what I think:
1. Side effects of Finasteride include permanent SD. I could say it's much more risky than 15 years in Risperidone or 8 in Prozac. In Brazil, some men in theirs 20s are losing their erection taking it and they have now low testosterone levels.
https://www.medicalnewstoday.com/articles/247858.php2. You were kid when you started all those medications. You probably don't really know what your full libido is. Probably it has done a psychologycal effect in your brain, it means, you have started your sexual life in a bad position, taking SSRI. It's very hard to change your fears, but some psychological treatments are effective.
3. Circumcision in fact make your penis less sensitive. You can try to restore your foreskin. But a lot of men uncut have the same problems, it's much more about related to low sexual drive and anxiety. I would say it's a minor problem to worry now.
4. Low Libido can be an endless loop.
Suggestion:
- Take Cialis 5mg everyday, seems safe.
- Herbs: Tribulus, Maca, Deer Antler Velvet, Saw Palmeto and MultiVitaminics help as well.
- Some supplements like pregnenolone are helpful.
- If you're free of severe anxiety and panic disorder, you can try Yohimbine (BE CAREFUL)
- Excess of testosterone in your body can have side effects such hair loss, anxiety (does not help the SD) and make it worse if prolonged.
- If you are tired of it all, there are extreme options, such Penile Injection.
I wish your problem is SD and not low libido, there's not a drug that helps a lot on it.