Winning Poker, Hold'em No Limit - $0.05/$0.10 - 6 players
Replay this hand on Upswing Poker - https://upswingpoker.com/replayer/6q95xoe

Jegorek (UTG): $21.81 (218 bb)
ak97b (MP): $15.09 (151 bb)
sportsguy16 (CO): $27.35 (274 bb)
MohDoh (BU): $10.00 (100 bb)
SecretSquirrel (SB): $16.57 (166 bb)
RightVariance (BB): $12.40 (124 bb)

Pre-Flop: ($0.15) Hero (sportsguy16) is CO with 2♠ 2♥
2 players fold, sportsguy16 (CO) raises to $0.30, 2 players fold, RightVariance (BB) calls $0.20

Flop: ($0.65) 2♦ 9♦ 4♣ (2 players)
RightVariance (BB) checks, sportsguy16 (CO) bets $0.16, RightVariance (BB) raises to $0.42, sportsguy16 (CO) calls $0.26

Turn: ($1.49) 6♠ (2 players)
RightVariance (BB) bets $1.11, sportsguy16 (CO) calls $1.11

River: ($3.71) Q♣ (2 players)
RightVariance (BB) checks, sportsguy16 (CO) bets $3.71, RightVariance (BB) raises to $10.57 (all-in), sportsguy16 (CO) calls $6.86

Total pot: $24.85 (Rake: $1.24)

Showdown:
RightVariance (BB) shows 9♠ 9♣ (three of a kind, Nines)
(Equity - Pre-Flop: 82%, Flop: 96%, Turn: 98%, River: 100%)

sportsguy16 (CO) shows 2♠ 2♥ (three of a kind, Twos)
(Equity - Pre-Flop: 18%, Flop: 4%, Turn: 2%, River: 0%)

RightVariance (BB) wins $23.61

I'm wondering if there are any betting and/or timing tells I could look out for in cooler situations like this?

Not really, especially because there's no common way people play flopped sets. Personally i would think that this guy is chasing flush until the river but there's no way i would put him on a set right there on the flop. Anyways, situations like this will happen, sometimes you'r gonna be on the other side but i don't believe that there's a point where we all can make a difference in regards to profit, situations like this are win or lose. It's online poker and i'd love to see someone really saying that this might be a fold situation for you without a possible straight or flush, i mean what kind of beast you'd have to be to see this coming.
Once again, there's nothing you could do here, furthermore, there's a plenty of room where you can make a difference when it comes to skills in online poker and this one just doesn't fit there.

I think, the money should have gone in way faster than this. You are both slow-playing, and that is not a good idea on a dynamic board like this. Your flop bet is really small, and so is his raise, so I would definitely go for a 3-bet on the flop and get some more money in the pot. Charge his draws and get some value. This time he had a higher set, but that is such a small part of his range, it does not matter. And no you can not get away. You have to get stacked here, but you should take a more active part in getting stacked

Set over set, when it happens, is a really unfortunate way to lose a stack. It's just a cooler and you should move on with the next hand.

Since you are playing zoom there is not much you can do.. maybe tag the guy and put a note on him. Also bet bigger on the flop.. 0.16 is like worse than checking.. bet like $0.40 cause you want to build a pot.