bet more all over the place

preflop, with two limpers already, you should bump up that raise to about 1.25 or 1.50. A good general rule is 4xbb, adding 1bb per limper.

On the flop, the pot was 4, you should've bet 3 instead of 2. If you had raised more preflop, you should've still bet ~2/3 or 3/4 of the pot on the flop.

On the turn, it is a little trickier, but don't bet 2 again, your hand might still be good. bet more, maybe 1/2 to 2/3 of the pot, to keep people drawing to the flush paying.

On the river, then you can check behind.