Villain is 40/20/6.0. I have problems with playing medium pocketpairs 99 TT JJ and sometimes QQ. Whenever an overcard comes on the flop, I'm not sure what to do.

Hand One:
PokerStars No-Limit Hold'em, $0.02 BB (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($6.40)
MP2 ($1.14)
MP3 ($4.97)
CO ($2.96)
Button ($4.89)
SB ($0.75)
Hero ($1.97)
UTG ($7.92)
UTG+1 ($1.07)

Preflop: Hero is BB with T, T.
UTG raises to $0.04, 6 folds, SB calls $0.03, Hero raises to $0.12, UTG calls $0.08, SB calls $0.08.

Flop: ($0.36) Q, 4, 7 (3 players)
SB checks, Hero checks, UTG bets $1.32, SB folds, Hero folds.

Final Pot: $0.36

Results in white below:
No showdown. UTG wins $0.36.

In hand two, i tried to represent a flush draw by just smooth calling and letting the villain bet right into me. when the river came a flush blank, i made a value raise at the very end.

Hand Two
PokerStars No-Limit Hold'em, $0.02 BB (7 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($2.73)
SB ($5.17)
Hero ($1.91)
UTG ($5.63)
MP1 ($3.30)
MP2 ($4.82)
CO ($4.95)

Preflop: Hero is BB with T, T.
1 fold, MP1 calls $0.02, 2 folds, Button raises to $0.08, 1 fold, Hero calls $0.06, MP1 calls $0.06.

Flop: ($0.25) T, 6, Q (3 players)
Hero checks, MP1 checks, Button bets $0.1, Hero calls $0.10, MP1 folds.

Turn: ($0.45) A (2 players)
Hero checks, Button bets $0.26, Hero calls $0.26.

River: ($0.97) 4 (2 players)
Hero checks, Button bets $0.2, Hero raises to $0.6, Button calls $0.40.

Final Pot: $2.17

Results in white below:
Hero has Th Ts (three of a kind, tens).
Button doesn't show.
Outcome: Hero wins $2.17.