One thing that seems to help me with tinnitus is the Airpods Pro when you customize it for your hearing. Like they have a tool on the iPhone/iPad that will (essentially) set up an equalizer in it that matches your (lack of) hearing.

I think actually stimulating the parts of your hearing that match the tinnitus is what helps. That's why this white noise thing works. But, also, listening to music or watching movies with the Airpods Pro (after configuring) -- I assume -- does something similar.