Need ideas on how to cope with really bad neighbors.

I own my home, they rent. I can’t just move, it would double my mortgage.

They have been putting me through so much mental torment since they moved in 2 years ago.

I bought this townhouse in 2020, has a nice yard, perfect little town, quiet area.. was perfect until my attached neighbor decided to rent her side out to NFH. I have her contact info and she asked me to let her know if anything needs to be addressed, but I don’t want to cause a neighbor war.

They are loud, have a subwoofer on the attached wall, their smoke comes over and smells up my home (he smokes in the garage and it infiltrates my home every night), their dogs bark for 5-10 min at a time at night and startles me awake since it’s by my bedroom. I’ve tried addressing all this with them very politely but it hasn’t gotten much better. Even tried an ultrasonic anti bark device with no luck.

What are ways to cope until we can afford to move in a few years? Spend lots of time outside the home? Build a she shed outside so I don’t have to deal with them much and just hang in there? lol

And please save the comments “this so why I’d never buy a townhouse”. I was young and dumb when I bought it. I regret this so much. I loved my home until these people moved in. So I’ve learned my lesson already I don’t need it rubbed in.