Its very difficult to read the action from that picture, so may I suggest, that you export the hand history and use the hand converter here on CC next time? Anyways I downloaded it and enlarged it, and based on, what I can see, here are my comments:
Preflop
Action was: MP limped, BTN raised to 6BB, hero called in SB with 2c2d, MP called, effective stack around 200BB
Comment: while stacks were deep here, you were also facing a very large raise, and I dont think this out of position setmine is going to be profitable, so I would just fold. One of the issues with setmining in general is, that good players dont stack off for 200BB or even 100BB with
hands like an overpair or TPTK. And when thats not the case, you end up in a situation, where you cant even profitably play for stacks, when you finally flop your set.
Flop
Flop comes 6c2s7s, pot must have been 19BB. Action was: Hero check, MP check, BTN bets 5BB, Hero check-raise to 21BB, MP fold, BTN call.
Comment: Line looks fine, but I would go slightly larger. Your raise was only half pot, and if he has a hand, he is also going to call something like 26BB, which charge him more to draw and sets it up for an easier river shove. If on the other hand he has nothing like AK, then he is also going to fold regardless of your sizing. So take advantage of that inelasticity and go larger for value.
Turn
Board is now 6c2s7s4d, pot must have been 61BB. Action was: Hero bet 42BB, BTN call.
Comment: Line and sizing looks fine. Some straights are possible now, but we cant be to worried about those.
River
Board is now 6c2s7s4d9c, pot must have been 145BB. Action was: Hero jam for 143BB, BTN call.
Comment: If this player will still call us down with all his overpairs, then we hit a great runout, and we should go ahead and jam. However if he is going to fold his overpair and basically only call us with better sets and an occational straight, then we check here and probably check-call, since there are some busted draws, he might
bluff the river with.
Results
So we ran into Ts8s, which was able to call, because it had a flushdraw, and then he nailed a very well disguised gutshot on the end. This is obviously a bit unlucky. But going back to preflop, this is why, I am not in love with the setmine to begin with. In my opinion, even when we finally do flop a set with a baby pair and get all the money in, often we just end up losing a massive pot to an even better hand like a higher set, a higher boat or as in this case a straight or flush. So my main advice here is to stop setmining with the smallest pairs, unless its an absolute pristine spot.