$100NL 6-handed

Site is a tiny and quite fishy site on which I'm propping

I PFR AQ UTG

Folded round to boring halfstacking TAG in SB who calls and tourney donk in BB who also calls

Flop comes K83

Checks to me, I check behind (is this bad?)

Turn comes Q , TAG checks, tourney donk bets 3/4, I call, TAG folds

River comes A , tourney donk 2/3rds

I, idk, call?