PokerStars - 125/250 Ante 38 NL - Holdem - 9 players
Hand converted by PokerTracker 4

BTN: 53.8 BB (VPIP: 18.57, PFR: 10.82, 3Bet Preflop: 3.39, Hands: 216)
SB: 57.84 BB (VPIP: 27.91, PFR: 2.33, 3Bet Preflop: 4.76, Hands: 86)
BB: 33.83 BB (VPIP: 14.29, PFR: 14.29, 3Bet Preflop: 0.00, Hands: 14)
UTG: 45.1 BB (VPIP: 30.56, PFR: 12.50, 3Bet Preflop: 0.00, Hands: 72)
UTG+1: 35.49 BB (VPIP: 20.34, PFR: 12.07, 3Bet Preflop: 0.00, Hands: 60)
MP: 22.35 BB (VPIP: 40.70, PFR: 5.81, 3Bet Preflop: 2.33, Hands: 86)
Hero (MP+1): 71.24 BB
MP+2: 40.69 BB (VPIP: 30.23, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 43)
CO: 57.75 BB (VPIP: 31.82, PFR: 18.18, 3Bet Preflop: 0.00, Hands: 22)

9 players post ante of 0.15 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.87 BB) Hero has K A

fold, fold, MP calls 1 BB, Hero raises to 3.24 BB, MP+2 calls 3.24 BB, fold, BTN calls 3.24 BB, fold, fold, MP calls 2.24 BB

Flop: (15.83 BB, 4 players) Q Q 6
MP checks, Hero checks, MP+2 bets 5 BB, fold, fold, Hero calls 5 BB

Turn: (25.83 BB, 2 players) J
Hero checks, MP+2 bets 32.3 BB and is all-in, fold

MP+2 wins 25.83 BB

Flop C-bet 100% ? - what does that mean

I iso-raise this spot for 4.5bb ( +60 bb deep) but your sizing is OK too
Fine played, he bets flop vs 4 players and barrels turn. Fold is your only option

Should I c-bet 100%?

Bet larger at 60+ BBs stacks over a limper. This sizing is about my 30BBs sizing.

In a 4 player pot in lower stakes, I tend to play "honest" post flop. You cannot bluff a whole table worth of players, so I might even check/fold this. I missed and someone has something, even on this dry board. You figure at least one of them has a pocket pair, so you have 6 outs to improve to top pair.

Thank you for your reply msg jjpregler

is My 2bet size small? So, do you think that this game is a good match?
I am new player, so want to learn more

At 60+ BBs, my standard bet size is 3x the BB + 1BB for every limper.

I use they JL formula pot size raise
Last bet x3 + money in the pot (in this case 1bb limper*3 +1.5bb from SB+BB and maybe more because of antes)