Really like how I played this but got snapped off, is this wrong?

PokerStars - 300/600 Ante 70 NL FAST - Holdem - 9 players
Hand converted by PokerTracker 4

BTN: 155.2 BB (VPIP: 50.00, PFR: 50.00, 3Bet Preflop: -, Hands: 6)
SB: 82.68 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 12)
BB: 23.86 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 3)
UTG: 28.79 BB (VPIP: 40.00, PFR: 40.00, 3Bet Preflop: 0.00, Hands: 5)
UTG+1: 6.28 BB (VPIP: 14.29, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 7)
MP: 2.9 BB (VPIP: 50.00, PFR: 0.00, 3Bet Preflop: -, Hands: 4)
MP+1: 57.36 BB (VPIP: 50.00, PFR: 25.00, 3Bet Preflop: 0.00, Hands: 4)
Hero (MP+2): 39.08 BB
CO: 29.94 BB (VPIP: 33.33, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 21)

9 players post ante of 0.12 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.55 BB) Hero has 5 7

fold, fold, fold, MP+1 raises to 2 BB, Hero raises to 5 BB, fold, BTN calls 5 BB, fold, fold, MP+1 calls 3 BB

Flop: (17.55 BB, 3 players) 7 8 J
MP+1 bets 6.67 BB, Hero calls 6.67 BB, fold

Turn: (30.89 BB, 2 players) T
MP+1 checks, Hero bets 27.3 BB and is all-in, MP+1 calls 27.3 BB

River: (85.48 BB, 2 players) 6

MP+1 shows 9 9 (Straight, Jack High)
(Pre 80%, Flop 78%, Turn 78%)
Hero shows 5 7 (One Pair, Sevens)
(Pre 20%, Flop 22%, Turn 22%)
MP+1 wins 85.48 BB

both of the 3-bet hand and sizing on the preflop look unusual, what's the reasoning behind this play.

I would not 3 bet this hand here. Obviously 75s is in your bluffing range. But with stacks of this depth, I prefer to have a linear bluffing range rather than a polarized bluffing range.

When you are very deep, polarized bluffing ranges can have more playability post flop. But when you are this shallow, top pair hands have more value than speculative hands, so I would choose the bluff range of top pair type hands here and have blockers to the 4 bet range.

So my value range here is something like TT+, AQS+ and AK for a total of 50 hands. And since you are betting 5 to win 4.55, you bluffing range shold be slightly higher than 2:1 value to bluffs. So you should have a little over 25 hands in your bluffing range.

I choose AJo, KQo and A9s here as my 3 bet bluffing range. (AQ and the suited boradways make better call hands here).

this is just 2NL zoom and common sizing for the stake, which actually means I posted this in the wrong forum. Sorry

Thank you, this is very helpful

A mod can close this thread if they wish. Sorry, everyone. This is actually a cash game, just so used to posting here.