So watching action by action to address hand preplanning
Open sizing fine-
BTN and BB call -What ranges are we expecting them to have? What are the difficulties when we have a pair vs those ranges?
How much does a 3 way pot decrease our preflop equity? Does this effect our goal for this hand? If we have just one pair are we thinking our goal is to play for stacks? Do you have notes on the V's - How will those notes effect your play?
flop-

Ac6s3d
Do your notes suggest V will play face up on this flop- If so how will they react to a bet? Can you increase your equity by getting one of the players to fold on the flop? Can we bet fold? Would you bet an Ax hand?
Have you studied 3 way bet sizing strategies? What sizing would a bet be here vs the wide ranges that the V's have if you had an AX
Turn 2h R is this a good card for you? Do you have the range advantage? The nut advantage? What is the nuts? Can our V have it? Second nuts?
We lead half pot why? How strong is our hand on this board? Is this the correct sizing for a marginal made hand vs 2 players?
Can we bet fold the turn vs weak players who have few bluffs? If yes are we still using half pot sizing to target what for value?
BTN calls ---again we preplan
River is a 2 what are our value targets now? What sizing do we use on this river for those targets? Do we check to call bluffs? What raises us on this river and is it always the nuts? What bluffs?
You bet 33% can you bet smaller and not induce bluffs? Are you thinking to bet fold? V calls are you expecting to see a weak AX hand?
Wow V had KK

what a great result for you-you did not get stacked