For hand 2, the only logical hand you can be behind is AA. I would still put in a river raise because it’s a little hard to put the villain exactly on AA don’t you think? He could play AK or maybe 99 and 77 the same way right? Having a read on how aggressive he is would probably help a lot.

Hand 3 is fine I think. I would expect to be ahead until that awful river, but you gotta call it.