So, lately I've been playing NL25 (antes) zoom, and the stacks often get pretty big.
I've found myself in some uncomfortable spots with low-mid sets. Can I get a sanity check here?

Hand 1:

BTN: 143.92 BB
SB: 111.76 BB
BB: 92.36 BB
UTG: 103.36 BB
MP: 311.36 BB
Hero (CO): 242 BB

6 players post ante of 0.12 BB, SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.12 BB) Hero has 9d 9s
fold, MP raises to 5.12 BB, Hero calls 5.12 BB, BTN calls 5.12 BB, fold, fold

Flop : (17.48 BB, 3 players) 9c 2h Kd
MP checks, Hero checks, BTN checks

Turn : (17.48 BB, 3 players) 6h
MP bets 8 BB, Hero raises to 20 BB, fold, MP calls 12 BB

River : (57.48 BB, 2 players) Ac
MP bets 286.12 BB and is all-in, Hero ??

Hand 2:

BTN: 292.08 BB
SB: 76.44 BB
BB: 179.92 BB
UTG: 403.16 BB
Hero (MP): 200.12 BB
CO: 118.6 BB

6 players post ante of 0.12 BB, SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.12 BB) Hero has 2d 2c
UTG raises to 3 BB, Hero calls 3 BB, fold, fold, fold, fold

Flop : (8.12 BB, 2 players) Jd Qd 2s
UTG bets 8 BB, Hero raises to 31.76 BB, UTG raises to 400.04 BB and is all-in, Hero ?