How many mistakes did I make? I did not feel good at all during this hand. God help me.

Hand History driven straight to this forum with DriveHUD Poker Tracking Software

NL Holdem $0.1(BB)
UTG ($20.91) [VPIP: 25% | PFR: 17.1% | AGG: 41.8% | 3-Bet: 8% | Hands: 260]
HJ ($21.69) [VPIP: 41.2% | PFR: 23.5% | AGG: 37.5% | 3-Bet: 0% | Hands: 20]
CO ($10.87) [VPIP: 18.3% | PFR: 16.3% | AGG: 38.1% | 3-Bet: 7% | Hands: 157]
HERO ($9.85) [VPIP: 29% | PFR: 24.3% | AGG: 40.6% | 3-Bet: 5.2% | Hands: 1638]
SB ($10.05) [VPIP: 12.8% | PFR: 7.7% | AGG: 18.8% | 3-Bet: 0% | Hands: 39]
BB ($11.59) [VPIP: 75% | PFR: 25% | AGG: 60% | 3-Bet: 0% | Hands: 4]

Dealt to Hero: J♦ A♦

UTG Raises To $0.30, HJ Folds, CO Folds, HERO Calls $0.30, SB Folds, BB Calls $0.20

Hero SPR on Flop: [10.05 effective]
Flop ($0.95): 4♦ 5♦ 3♣
BB Checks, UTG Bets $0.60 (Rem. Stack: 20.01), HERO Calls $0.60 (Rem. Stack: 8.95), BB Raises To $1.70 (Rem. Stack: 9.59), UTG Calls $1.10 (Rem. Stack: 18.91), HERO Calls $1.10 (Rem. Stack: 7.85)

Turn ($6.05): 4♦ 5♦ 3♣ 3♦
BB Checks, UTG Checks, HERO Bets $1.48 (Rem. Stack: 6.37), BB Calls $1.48 (Rem. Stack: 8.11), UTG Raises To $18.91 (allin), HERO Calls $6.37 (allin), BB Folds

River ($34.29): 4♦ 5♦ 3♣ 3♦ 5♠

Spoiler alert!

Click to Reveal!

UTG shows: 4♣ 4♠

UTG wins: $21.94

You have a good hand for r-r in preflop with position. In flop x/c. In the turn i bet and call and in river I put another size and at this point we have a good blow to our range.
In river there are up to 5 lines higher than ours, so we are 85:15 against.
I know it is difficult, but at this point if are 3bet am closer to the fold than the call.
Do not get frustrated with these hands, it could be the same result from the push in preflop.

i agree preflop but i would raise the flop cbet as the flop hits your range and you have crazy equity.
when getting reraised from the bb i would call when getting the odds to but not 4bet as he might be a fish and if so, you dont have much fold equity.
if he doesnt continue on the turn i just check behind or bet/fold as he is actually representing a full house (but easy to say that with knowing the result)

I think I play this pretty similar to you. Can't get away from the nut flush on the turn. I think villain could easily play this way with an overpair 1 diamond like QQ or TT. Also could play 66 this way. There are also plenty of flushes he can have. This is a cooler, no way around it.

you did good on that hand its not obvious that he had the full house when you hitted the nut flush i think its always +ev to call without any complication