So I usually am in a bad mood which in return gets him in a bad mood.
in a healthy relationship, the mood of one would not change the other's to reflect it back. they would respect and allow the other to feel what they feel, emote what they emote.
your AH has given every indication by his ACTIONS that he is NOT invested in the relationship, OR being a family, OR being able to put the children as a priority. he has ONE mission. and that is to drink.
none of this is your fault. you did not Cause it, you cannot Control it, you cannot Cure it.