Seems like a very light call down here. I think more often than not this is -EV. Congrats on being right on this one.
Imo 33 is a fold pre, a fold to 3bet and also a fold on the flop as played when we miss the set.
Villain is 3betting your UTG range so usually if he’s even half asleep his range is also going to be on the stronger side, and when he barrels three streets it has our hand crushed. If you really want to bluff catch you could pick a stronger candidate than 33 IMO.
If I understood correctly, then this is the discipline of ZOOM, I do not play in it, so it is difficult for me to give advice on an observational basis, because in this game there is little information about opponents, but I would either raise the bet or make a fold postflop
If table is loose and passive, I would just limp with treys in EP. If table is aggressive, especially loose aggressive, I would either raise 2,5-3 BB or fold in EP and if I get 3-bet, I would either 4-bet or fold. Play in the video is definitely EV- if you have not read on your opponent. You really want to play small pairs in multiway pot. Do not forget: caller in poker is loser in poker.
I think it's fine, depends on opponent. Once the board paired you start winning significantly against a lot of random hands that could 3bet, once the club hits, a lot of hands get made, so the hands only really left that bluff, are AJ, and AK.
So actually this is probably a fold. However some opponents 3 bet super wide and bluff at very high frequencies, so against that type of player, I would prolly call down too.