Played vs unknown

How would you play this spot?

Preflop we can call or 3bet. IMO calling makes sense here as this hand has good playbility in multiway pots.

On the flop nothing happens.

On the turn I decide to call as preflop raiser doesn't have too strong range given the flop action. Ofc he may have some Kx hands and sometimes better Jx but I think he would check again with Jx most likely. He can also have 55 sometimes but he can also have some draws he didn't want to cbet in multiway pot and folding second pair seems too nitty in this spot as I don't have so many stronger hands here.

On the river I decided to lead so I can get value from his Kx hands mainly. Would X/R be better here ? I think he will check back quite a lot of his worse hands tho and I don't wanna miss the value.

Vs reraise I guess we should fold because given the action and my line I don't think villain will bluff too often. Our hand is bluffcatcher now but can villain have enough bluffs here ? The board is also better for his range so I guess we should be careful here.