Think you played it pretty well, but I would like a river fold vs such sizing. Folding river is probably exploitable, but eventhough you have 2pair I dont think you beat villains value range, and I dont expect him to be bluffing enough with the pot size bet. From my experience, very big bets at these stakes are very value heavy, I would expect A5s+ a lot here, so folding seems like the play

any information on villian? playing vs somewhat computer player it is standard call. Explo I'd fold not many things can be bluffed here

Bet bigger on flop. You give them too good odds to draw and thei'll easily call you with any ace and any draw anyway

If you should fold here or not is really dependent on the type of player. Some like to bet big to bluff , but smaller to get a callwhen you check, and some only bet this big with value. Both are really exploitative if you pay attention

Yes, the call is probably significantly -EV. Reason being that the vast majority of micro/small, even mid-stakes players will have a hard time finding enough bluffs on this runout for that sizing.

Blockbet might be good on the river.

These river calls is maybe the biggest leak you can literally have in these games. At times I have used an approach of never having a river XC after betting a polar range OTT. It means you need a lower turn barrel OOP but it doesn't really decrease EV of range. There are a handful of rivers it can make sense to check a lot and have a XC range.