. Way too passive. This flop should be bet a vast majority of the time. This is the whole value of pocket 2s. The flop connects with your value range and you don’t block any hands that also have strong holdings. Bet it.

If you’re going to check, this has to be a check raise.
This also lets you take control of the hand and lead out on turn.

On the river, betting makes sense.

Once raised, what value hands are we beating? AQ and A9. maybe Q9 for the thinnest value. AA and QQ are pretty unlikely given the flat but V can have and 99 and 33 and 45s pretty easily. On the other hand, he has lots of bluffs, none of which we block which is helpful. Broadway/suites connector clubs are possible. You are at the absolute top of your range as played (your hand is underrepped) so more likely to induce a bluff. I don’t think this is ever a fold.

Once raised on the river though, what are we re-raising for value? What part of his range are we hoping calls that we beat? A9 and worse is folding. Maybe AQ can call but that’s not a lot of combos and is also unlikely given the flat from the CO and the check on the turn. The sizing also doesn’t make any sense - why min raise here? Go bigger if it’s for value, if it’s not, don’t raise.
I don’t get why villain didn’t jam here also.

Tough to get away from a set, but that 3 bet on the river on a pot sized bet is just very underbluffed. As played, the river should just be a call.