Venting/needing advice; I'm so tired of being dismissed

First of all, hi to everyone reading this.
It's going to be a bit of a long text, so thank you in advance to anyone who takes the time to read and reply <3

So, I have a lot to say, but I’ll try to keep it brief.
I’m 21, and over the past year, my period symptoms (especially the pain) have gotten worse—they were already bad enough, but (suprise surprise) it never occurred to any doctor that I might have endometriosis or adenomyosis.

Fast forward to the beginning of the year: I was diagnosed with adenomyosis, and since then things have only gotten worse—even though it was supposed to be the opposite, since I now had an official diagnosis.
With great difficulty, I was referred to a center specializing in endometriosis and adenomyosis, but in hindsight, things didn't get better at all.
Despite severe psychiatric side effects from other birth control pills, I was prescribed Slynd, and after three months, I wasn’t myself anymore. Once I stopped taking it, I had much more painful periods (Brufen didn’t touch my pain) and constant headaches due to hormonal fluctuations.
Throughout all this, I could and can only contact the center by email, and they generally respond after at least one month. So I suffered terribly without any help.
Even though I repeatedly described my excruciating pain and the side effects of the pills, I wasn’t offered any other type of pain reliever.

It wasn’t until May that I was prescribed an MRI, which then revealed DIE. I still don’t understand why they didn’t diagnose me sooner, given the severity of my symptoms (and given they're a specialized center).
Anyway, once I was diagnosed, nothing changed. After all I had told them, they still prescribed me dienogest, and it was so terrible for my mental health that I still haven’t recovered, even a month after stopping it.
Now they even want to prescribe me Ryeqo (Myfembree).
Like, are you kidding me?

No doctor takes me seriously, and it seems like the psychiatric side effects caused by the pills are just a joke or simply something I’m supposed to put up with as if it were nothing (they're so severe that they make my life unlivable).
I’m so tired of going to appointment after appointment and seeing no improvement and just being dismissed like this.

Have you had similar experiences but things got better? I don't really know what to do. I'll contact another specialized center soon, but all the doctors I've seen so far have acted more or less the same way and tell me that I absolutely must take hormone therapy, otherwise my endometriosis will spread (yet I've read a lot online that says there's no certainty that hormone therapy will slow down endometriosis).

Any advice is welcome <3