Please don't try again with this guy. He's toxic and your relationship with him was toxic. To "try again" will be to willingly put yourself into an emotionally damaging situation.
Sometimes, men change. But I don't think this guy will. Jealous, controlling guys usually remain jealous and controlling. No matter what you do for him, you're not going to be able to make him happy. Whatever concessions you make for him, he's going to ask for more. You're free from him now. Please remain free.
I can't stress enough how much better you'll be without him.