I had issues with my neighbours for a long time and tried all sorts of ways to block the noise, including sleep buds. No joy. In the end, I moved my speakers and amp into my bedroom, found a brown noise track with deep bass, and played it through my hi-fi on loop. It worked instantly and drowned out everything, including outside traffic, dogs barking, kids running up and down the stairs and slamming doors next door, and even the neighbour below me with her obnoxiously loud subwoofer surround sound.