H1 - bet bigger on the turn. pre flop call is fine. not sure im bet folding the turn given stack sizes

H2 - meh i do this sometimes im not sure its good, if you think his donkin range is very strong you may just call if u feel you will get paid off some on the river

H3 - given the guy is so loose passive the min raise generally means ur one pair is beat here very often. there is no point raising back over the top on this flop. as played I check behind on this turn almost always, given u hold the Ac