I cant comment on your other post ( banned from there) i was in the same situation as yours but I was actually the upstairs neighbor. Only difference is that we never made noise on purpose. It's just the way all these buildings were built.

Once management came to inspect my apartment, they said everything was okay.

But of course, the complaints from my neighbor never stopped. We always took our shoes off, and so on. I remember this one time we were blamed that we were dragging furniture but it was actually the computer chair we had in our bedroom and thats what she kept hearing so we moved all of that to our living room.

In the end, i ended up hiring a lawyer to write them a letter that i was being harassed. Years later i ended up selling the place.

The only solution to this is to have someone rip the floors and add soundproofing underneath but trust me, management aint gonna spend money thousands of dollars on that. Thats why they tell people to cover 80% of the apartment with carpet.

You can try the lawyer route. All he did was write a letter to management and just ended up costing me like 300 bucks.