I have noticed that a lot of live players in low stakes poker games (i.e., 1/3 or 2/5) love to gamble and the only strategy that works for them is the betting strategy. For example, if they notice that either your bet sizing is small or when they make two pair, they will bump up their bet sizing to 10x or larger, thinking that they got a “monster hand”. This comes from my experience playing at a southern California casino, where a very LAG player claimed two pair to be a monster hand on the flop, rather than calling the CBet to get more value out of his hand on the turn and the river. Bet sizing is a key strategy but when it is used by a LAG recreational player or someone who loves to gamble, you will notice that they bluff a lot too. In your case, I would check on villan’s bluffing tendency. Also, with Q93r on the flop, it is a very dry flop. It means that you could have bet a little more than $20 as a CBet. I would make it $35. With 6 on the turn, it doesn’t bring in anything, other than flush draw. Now the villan could have AQ, but it is highly unlikely because you have a Q, which blocks any AQ combos. He could have a set of 9, which he slow played with preflop. With him betting the turn still doesn’t mean anything, unless you see the river. If he checks on the river, then I would bet 2/3 pot.
Hope this gives you some idea.
Mayur