I wish I knew the answer to making crippling anxiety better, both to help you OP and to help myself. I've always been anxious, as far back as I can remember. I remember when I was just a little kid my mom would tell me I was a 'worrywart' and to not worry so much - she meant well but as everyone here understands, you can't just shut that off, unfortunately. My anxiety has only gotten worse as I've gotten older and my physical health worsened. As Ive aged I think hormones have play(ed) a part too in why my anxiety has worsened. I've tried meds, though not many...mainly benzos, which the psych I saw years ago just kept prescribing then I got off of those (not easy) and then a year to so later my health got really bad so my doctor put me on another benzo which I'm still on. :( I do not recommend that route. Therapy never really helped. I used to go driving and listen to music; that was a calming thing for me, but I haven't had license or car in years so that's out. When I was physically healthier and able to get out into the world and do some things, I think that helped more than I realized then to keep my anxiety somewhat in check. Now I'm essentially housebound so what I do mostly is watch movies. That's about it. I can't focus long enough (also my eyes are bad) so reading, which i've always loved isn't possible. And I don't sleep well so that's no escape either.
I guess I'd suggest that if you're physically able, try to get outside as much as you can: drives, walks, that kind of thing. I know Covid limits a LOT of possible activities these days too but try to find ways to move your body and see other things than just the inside of your home, if you can. That really did used to help me. If you're mostly inside at home a lot, like me, I guess distraction methods like reading, movies, even coloring ( I do that sometimes) can help. Or at-home exercising if you're up to it.
Also wanted to mention that I'm like previous posters also in that too much stimulation now really ramps up my anxiety. I suppose part of that is all the years of isolation and not being exposed to much stimulation, so try to prevent that happening to you if you can.
Best wishes OP, and to all of you <3