Couple hands where I got value from calling down, needs correcting!

[Spaded]

This first hand is a triumph of implied odds, but did I pull a boner by not raising when I hit?

$0.25/$0.50 - No Limit Hold'em
Seat 1: x ($37.15)
Seat 2: Villain ($86.50)
Seat 3: Hero ($57.40)
Seat 4: x ($7.10)
Seat 5: x ($19.50)
Seat 6: x ($109.70)
x posts the small blind of $0.25
x posts the big blind of $0.50

*** HOLE CARDS ***
Dealt to Hero [Ac Kc]
x folds, x calls $0.50, Villain calls $0.50, Hero raises to $2.75On FTP I just hit "bet pot" whenever I raise preflop. The correct bet is $3 here, but $2.75 is close enough., x folds, x calls $2.25, x folds
Villain calls $2.25
*** FLOP *** [7c 3c Qh]
2 checks, Hero bets $6, Villain raises to $14, Hero calls $8 Slightly bad pot odds, but I love the implied odds.
*** TURN *** [7c 3c Qh] [2c]
Villain bets $20, Hero calls $20 Am I correct in assuming that a push would be better than a call? He only had a little over $20 left and looked like he had a strong hand.
*** RIVER *** [7c 3c Qh 2c] [Jc]
Villain checks, Hero bets $20.65, and is all in, Villain calls $20.65
*** SHOW DOWN ***
Hero shows [Ac Kc] (a flush, Ace high)
Villain mucks
Hero wins the pot ($115.30) with a flush, Ace high

*** SUMMARY ***
Total pot $118.30 | Rake $3
Board: [7c 3c Qh 2c Jc]
Villain mucked [xx]
Hero (button) showed [Ac Kc] and won ($115.30) with a flush, Ace high

This second hand ANNOYS THE HELL OUT OF ME because I played so bad, yet the results were positive. I felt like such a donkey playing that way, but it was heads-up, and I don't have a lot of HU exp.

$0.25/$0.50 - No Limit Hold'em
Seat 2: Villain ($51.55)
Seat 5: Hero ($48.25)
Hero posts the small blind of $0.25
Villain posts the big blind of $0.50
The button is in seat #5
*** HOLE CARDS ***
Dealt to Hero [8d Qd]
Hero raises to $1.50 Had the button, raised reflop. No big deal., Villain raises to $4, Hero calls $2.50
*** FLOP *** [5d 4s 4d]
Villain bets $6, Hero calls $6 Flopped a flush draw, but i didnt semibluff. Should I have?
*** TURN *** [5d 4s 4d] [Qs]
Villain bets $12, Hero calls $12 Flush draw plus top pair. Should I have pushed here?
*** RIVER *** [5d 4s 4d Qs] [3c]
Villain bets $26, Hero calls $26 Kind of a crying call, because the pot was so big. I felt like a total donkey. Should I have folded?
*** SHOW DOWN ***
Villain shows [Jd Jc] (two pair, Jacks and Fours)
Hero shows [8d Qd] (two pair, Queens and Fours)
Hero wins the pot ($95.50) with two pair, Queens and Fours
Villain: jesus
*** SUMMARY ***
Total pot $96 | Rake $0.50
Board: [5d 4s 4d Qs 3c]
Seat 2: Villain (big blind) showed [xx] and lost with two pair, Jacks and Fours
Seat 5: Hero (small blind) showed [8d Qd] and won ($95.50) with two pair, Queens and Fours