I decided to call this time because he had a very low pfr, but only a couple of hands

I think this is pretty obvious.

Here is my question. I decided to only bet 50% here because I expect these guys to fold overpairs if I go bigger, but this way harder to get stacks, so unsure what's best here.

Here I decided to go bigger, so he thinks I'm polarized and would bluffcatch more with his overpair. But if I overshove here I think he folds his overpairs.