DBT therapy doesn't work (I read and practice skills for 30 mins a day M-F), meds don't work, consistent cardio doesn't work. Where do I even go from here? (long rant, sorry)

Quite frankly I'm just at a loss at this point. Been on the therapy and meds journey for almost a year now, and did the whole exercise shebang consistently for like 2 years. I was doing cardio for an hour every 1-2 days.

I am getting quite disillusioned and don't understand what I'm even doing anymore. I'm getting so caught up in various things that I'm just confused as all hell. Every time I think I figure something out, I end up so wrong it's almost like it's not even funny.

I have intense reactions to rejection. I have extreme and intense negative emotions that persist for many hours and days after a trigger and they are very painful and difficult to deal with and can impair functioning. I have a lot of social anxiety, which I did not think contributed much to this. But now I'm wondering if I have a pattern of social anxiety --> extreme rejection sensitivity --> extreme emotional dysregulation.

I have been on escitalopram (Lexapro), then lamotrigine (Lamictal), and now quetiapine (Seroquel). I do not have ADHD. I do not have bipolar disorder. I don't even have persistent depression. I have periodic extreme episodes that cause a lot of distress and can cause functional impairment like how my work threatened to fire me. I also have intense shame and self-hatred, often babbling to my online friends nonsense about how I'm a "demon" when I get this way. I am also totally normal 90% of the time. It's only the remaining 10% that causes the struggle.

People always tell me to "go to therapy". I am. I have seen multiple therapists and have been consistent with this one since the fall. People tell me I don't put enough work. I am. People tell me I am not honest enough to my providers. I am. People tell me try a different therapist. I have tried many (I stick with my main one for continuity and so that I don't have to keep rehashing my backstory).

At this point I feel like I don't know what is down and what is up. I no longer understand what my problem is anymore. Every time I think I figure out what my issue is, every time I think I figure out a technique to help me, I'm wrong.

I'm starting to think that this is who I am. It is unchangeable. I experience a lot of pain and sensitivity where others don't. I wish that wasn't the case, but I think it can't be changed.

Idk where do I go from here, friends? Thank you to those who have read my entire rant lmao.