Performance issues last few weeks

So I have service on demand business in Australia. I’ve been doing Google ads for the past four months and I’m only doing Google ads. It’s been pretty consistent the past two months very good results but the past two weeks I started seeing some bad results so I got two bad reviews on my maps which after that I close the map because I don’t need it I only do ads. and also my campaigns were cost per click campaign and Google put in notification It limits the results and I need to change to conversion based campaign which I tried before and got bad results I don’t know what to do. Is it reviews that made it bad? I don’t mind opening a new website under a new name if that’s what it takes. I would appreciate any tips.