My dad had tinnitus and it bothered him relentlessly. He was constantly following potential new treatments, talking to doctors about it, etc.
I have it too. I've taken the approach of truly accepting it: "I will hear these sounds the rest of my life, and I'm truly okay with that". As a result it doesn't give me anxiety or bother me, and I find it helps it fade into the background. The more you focus on it (and let it bother you) the more it stays in the foreground.
I know the advice of "just learn to be okay with it" is easy to communicate but very hard to actually do. I found mindfulness meditation helped me learn to accept things without judgement, including the presence of my tinnitus.
My ear doctor suggested the myNoise app[0] for me, specifically the Neuromodulator and Brown noise sounds.
The Neuromodulator[1] is a random-ish noise field that ... confuses? the brain after a while and lets you forget the tinnitus - at lest temporarily. The noise isn't "real" it's the brain generating it due to faulty signals, so giving it a bunch of noise helps somehow.
Brown noise[2] was specifically suggested for older people as it has more stuff in the frequencies we still hear naturally :D
As a happy coincidence my partner AND dogs sleep better with the brown noise on, they all tend to wake up to the smallest of noises - this helps with it.
[0] https://mynoise.net
[1] https://mynoise.net/NoiseMachines/neuromodulationTonesGenera...
[2] https://mynoise.net/NoiseMachines/whiteNoiseGenerator.php