So the question is simple, how bad do you guys think is to not donk bet at all? Huge EV loss? Also how do we construct one? Like a hand below how can we play it not having that meh am a fish feeling(and yes folding pre is out of the question).

PokerStars Zoom, Hold'em No Limit - $0.05/$0.10 - 6 players
Hand delivered by Upswing Poker

UTG: $12.16 (122 bb)
MP: $16.30 (163 bb)
CO: $12.54 (125 bb)
BU: $13.07 (131 bb)
SB: $31.23 (312 bb)
BB (Hero): $11.66 (117 bb)

Pre-Flop: ($0.15) Hero is BB with T♣ J♣
UTG raises to $0.28, 1 fold, CO calls $0.28, 2 players fold, Hero calls $0.18

Flop: ($0.89) T♦ 9♣ 2♣ (3 players)
Hero checks, UTG checks, CO bets $0.60, Hero calls $0.60, UTG calls $0.60

Turn: ($2.69) 3♦ (3 players)
Hero checks, UTG checks, CO bets $1.65, Hero calls $1.65, UTG folds

River: ($5.99) 7♥ (2 players)
Hero checks, CO checks

I think calling the flop is okay here because we have a decent draw, some implied odds (2 players still in the pot), and we have showdown value with our pair. We have good implied odds but our pot odds are weak. I don't think we are winning with two pair enough in this spot with CO taking the betting lead on the flop and then the turn. I think we win more often with a flush and three-of-a-kind.

Hero: 9 flush cards can improve our hand + 2 outs (Tens).
We have 11 outs = 23.4%
Call $0.60 to win $2.09 = 28.71% -> Pot Odds.
Implied odds: 2 players left in the pot.

If we hit our flush or trips, we can beat villian's trips, two pairs, and over-pairs.. meaning we can stack our villian if we hit our draw/trips.

I fold the turn here. The hand is still multi-way and our drawing value is less than the pot odds we are being offered.

EDIT: Donking range -> Very infrequently. I would donk bluff and donk value-bet sometimes to keep our better opponents guessing.

All in donk river.