Hand 2 he chases with crap pair all the way to the river, then hits his 2nd pair and check/calls? lol. He doesn't realize that if he chases stuff without the odds, he needs to make up those bets when he improves to the winning hand? Why chase to the river if u just check/call when improved?

Hand 3, he just calls on the final end with the nuts?

You could have lost at least 2 more big bets.