LMsA: Oh boy did he fail miserably in this regard:
It's possible that he is being the best dad and husband he can be. It's just that his potential is limited to being really bad at both. Some people just really suck at things that almost everyone else manages to do a decent job of.
I mean, it's either that, or he's a filthy, lying douchebag. Okay, that might be a false dichotomy. He might simply be a miserable failure, as you said. Any other options? It's not looking good for the "best dad/husband" candidate of 2019!