L, hun, detach. You cannot nice your husband back. Not even speaking his LL will work. Even if you spoke Chinese and learned to stand on your head while drinking a glass of water it still would not work.
Focus on yourself and the kids and not on him. Own your $hit and recognize your faults but put it behind you and improve yourself. This is as much your journey as it is his. Learn to love yourself, recognize that you are worthy of love and that you will be ok weather he is in the picture or not.