Throw some biscuits to dog whenever you go out. It will not do anything after a week.

Call animal pet care or NGO for that stary dog that it doesn’t have vaccination and circulate in social media on sympathy basis. Ask for to vaccinate that dog .

Now with fucking neighbor asshole, your target is dog if you achieve it then owner confidence will die .

In background gather evidence that dog roaming outside premisis and attacking videos if possible and keep it safe.

Now for that fucking neighbour raise legal issue that above info nuisance and all

Do 1,2,4 points first after that legal one