How many mistakes did I make?

.25/.50 limit

I'm UTG, with QKo.

I raised preflop, got 2 callers, sb completes, bb completes.

Flop comes: 5d, 9h, 2h. sb & bb check, I check button bets, sb raises, we all call.

Here with the check raise, I think I should've folded.

Turn comes- Qs
sb bets, I raise, 2 call, sb reraises, I call, 2 call.

River- Ks.

sb bets, I raise, 1 fold, 1 call, sb 3 bets, I cap it, 1 call, sb calls.

Final pot, 35xbb.