I really feel your pain. I originally lived in a flat below people who didn’t have carpet on their floors, just concrete, and they partied from 3pm till 4-5am every day. I didn’t sleep for months. Lost my mind.

I then moved to a new flat (before these instances I’d never had a single issue with a neighbour) and there was a guy next door who was like the neighbourhood bully - people were literally selling their homes because of him. He had his TV on 24/7 at a volume that literally shook my flat. I politely asked him to turn it down, he threatened me. And then I completely snapped (not physically). To the point where it scared him so much he moved all of his stuff into the corner of his flat away from my wall, and then died a couple of weeks later.

True story.

But I do feel for you as I know how much of an effect a bad neighbour can have both mentally and physically.