Also got tinnitus here. Woke up with it about 5 years ago. I'd recently had COVID and was also on a strong medication. But I've been a lifelong insomniac so this article has me wondering.

I can only sleep when there's another noise in the room for frame of reference, otherwise the tinnitus feels like the loudest sound in the universe. My current solution is an air purifier on its audible middle setting (basically white noise with a use), and a humidifier in winter.