I have known people that have it much worse than I face daily.
I genuinely could hear CRTs when I was 5.
Tinnitus sound now is very similar for me too.
Hearing test showed high frequency hearing loss in that range which is well above human speech and a lot of music.
I always have that, but I only hear a random high pitched tinnitus noise in one ear, rising and falling in volume for max 10 seconds, about once every few months.
I can still hear old CRTs in my forties, although it's less maddening now. They had those mosquito devices, that are intended to repel kids, for a while at a shopping mall near me. They repelled me very effectively as well.
A friend once thought it was funny to try the 15.000Hz silent ringtone on me, although I had told him not to. It made me react without conscious input and I nearly broke his phone.
Holy crap! I'm not alone! And now I have a name for it. They've always freaked me out and I don't even know how to describe it to people.
I get these, too. I just looked it up, and it's called "Sudden, brief, unilateral, tapering tinnitus (SBUTT)." That's quite an SEO-friendly name.
What helped me accept (and ignore) tinnitus was realizing that I had already grown accustomed to tolerating that sound indoors. When's it's something you have no agency over (like "it's an old house and the wires just make that sound sometimes"), you learn it's part of the environment.
Accepting it as part of the environment gets you past the "OMG my body is ruined forever" anxieties and back to normal life.