How can I flop top set twice and still lose?

What else am I supposed to do?
Hand #1723011381000352: St.Moritz (Turbo) 11381
Seat 1: Prof*** (78,00 in chips)
Seat 2: leex*** (20,50 in chips)
Seat 3: Anth*** (60,50 in chips)
Seat 4: navy*** (38,50 in chips)
Seat 6: jlen*** (15,00 in chips)
Seat 7: mrro*** (2243,25 in chips)
Seat 8: stic*** (47,25 in chips)
Seat 9: Tate*** (31,25 in chips)
Seat 10: Cat5cane (57,75 in chips)
Prof***: posts small blind $0,50
leex***: posts big blind $1
Dealt to Cat5cane [ Ks Kd ]
Anth***: folds
navy***: folds
jlen***: folds
mrro***: folds
stic***: folds
Tate***: folds
Cat5cane: raises to $2
Prof***: raises to $3
leex***: folds
Cat5cane: raises to $4
Prof***: calls
@@@ F_L_O_P @@@ [ Kh 7c 3s ]
Prof***: checks
Cat5cane: bets $1
Prof***: calls
# # # TURN # # # [ Jc ]
Prof***: checks
Cat5cane: bets $2
Prof***: calls
&&& RIVER &&& [ Td ]
Prof***: bets $2
Cat5cane: raises to $4
Prof***: raises to $6
Cat5cane: raises to $8
Prof***: calls
*** SHOW DOWN ***
Cat5cane: shows [ Ks Kd ] (Three of a Kind, Kings )
Prof***: shows [ Qs Ad ] (Straight, Ace high)
Prof*** wins $30 with Straight, Ace high
--------------------------------------------------
Hand #1723011381000378: St.Moritz (Turbo) 11381
Seat 1: Prof*** (99,25 in chips)
Seat 2: leex*** (16,50 in chips)
Seat 3: Anth*** (63,50 in chips)
Seat 4: navy*** (39,50 in chips)
Seat 5: ForJ*** (27,25 in chips)
Seat 7: mrro*** (2241,50 in chips)
Seat 8: stri*** (28,75 in chips)
Seat 9: Tate*** (37,75 in chips)
Seat 10: Cat5cane (53,75 in chips)
Cat5cane: posts small blind $0,50
Prof***: posts big blind $1
Dealt to Cat5cane [ Ah Ac ]
leex***: folds
Anth***: folds
navy***: folds
ForJ***: folds
mrro***: folds
stri***: folds
Tate***: folds
Cat5cane: raises to $2
Prof***: calls
@@@ F_L_O_P @@@ [ 9s Ad Tc ]
Cat5cane: bets $1
Prof***: calls
# # # TURN # # # [ Kh ]
Cat5cane: bets $2
Prof***: raises to $4
Cat5cane: calls
&&& RIVER &&& [ 5d ]
Cat5cane: checks
Prof***: bets $2
Cat5cane: raises to $4
Prof***: raises to $6
Cat5cane: calls
*** SHOW DOWN ***
Prof***: shows [ Qd Js ] (Straight, Ace high)
Cat5cane: mucks
Prof*** wins $25 with Straight, Ace high
Cat5cane: mucks [ Ah, Ac ] (ThreeOfAKind)