I think Anop wants all those things that he lost out in life.He may have been locked away by the enemies for more than two decades he doesn't resent that but he has lot of resentment against Alok and his wife Meenu.When ever he sees Shiv he probably is reminded of their treachery.
Meenu didn't do the right thing by keeping this thing secret for so many years. His younger son was born after he has left but his older son was born when he was very much around but they never told him what they have done with his son.
He wants to get back Alok for making him feel useless same with Anandi who is being nice to him despite realising what he has done to her.Now more than being bothered by Alok he is bothered by the goodness that was showered on him by his own son and DIL.
There he is trying to get back into the groove now that he is with the family and coming to terms with life then Alok in his fit of anger dealt with him badly then Anandi and Shiv decided to pacify him by helping join Bhaii and now when he is trying to do something with his life by hook or crook his son and DIL are being magnanimous with him and that is making him feel even more inferior.
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Maneating tiger will have indigestion if it tried to gulp down DB😛😆
I think Daddu will soon fall ill seeing his warring sons and DILs