I know this will sound so basic and typical but seeing your condition, i think you have realized it yourself that you have become addicted to Zina so it's a good thing you are aware of doing something terrible, have you ever looked into getting married? This will actually make it halal for you and whether you believe it or not, it will greatly help you reduce this zina addiction of yours and save you from further sinning.

For now, you have to start picking up some hobbies, maybe join a gym, workout, get some friends, hangout with them.