clinicaltrials.gov will give you all the clinical trials going on.

A basic search for clinical trials that are recruiting for TMS + depression are in the hundreds.

(You need to further filter by location, etc)

Or you could look into psychedelic medicine. On the legal side, ketamine has helped a lot of people with treatment resistant depression. You could also look into participating in clinical trials of MDMA or psilocybin. The clinical trial results for those medicines are phenomenal, too.

Ketamine is ~70% effective at treating depression.

https://www.yalemedicine.org/news/ketamine-depression

Yes--per the last line of the article:

If you're interested in participating in a study, please email sainttmsstudy@stanford.edu.