There are always clinical trials going on in the US for Tinnitus. They are easy to find.
Tinnitus Talk Support Forum
@Anthony2019 I had another friend the same day say something about something she found on TikTok. She started to show me but it seemed scammy. "There's something doctors aren't telling you about and it's free, sign up to find out!" =S
I wouldn't trust anything on TikTok. The website is Clinicaltrials.gov. I hope that you have tried hearing aids to see if they work.
@Anthony2019 I have not "got around" to trying hearing aids yet. I wonder if Costco would let me try.
I'm not sure if Costco will allow free trials (you can ask them) but Connect Hearing will. See if there is one by you. You just need to see if they help. If they do, you can then shop the prices. I would have paid any amount.