I'd sell when you can. We had horrible neighbors with thin walls and 2 young kids. They never left the house and their kids were constantly running around like animals. Not the kid's fault that the parents just didn't give a shit about them or their lives, but still...they also threw shit in the yard constantly, hung shit out their windows, and had a monster AC half hanging out their window ready to take someone else.

Complained about them more times than I can count but nothing ever changed. They were renters that finally moved out but we were close to selling because they were a nightmare to deal with being loud af at all hours.

Good luck hope you can figure something out.