Has anyone got a call recorder app to work?

First of all, there is a built-in automatic phone calls recorder, you just have to enable it in your stock phone app. But if you want a much better one you could check the app made by skvalex developer (check google store). Ask him personally to get the last version working automatically both ways. But I think you should pay for it first. Due to Google's restrictions, newer versions do not work automatically.
 
Google has removed the phone call recorder API in Android 10, so we won't be recording phone calls any more. (I guess they didn't like getting sued by various governments that prohibit recording phone calls.)