Get some confusing hands where not sure about best option...

21 hands played...

PokerStars - $14.29+$0.71|10/20 (2 max) - Holdem - 2 players
Hand converted by PokerTracker 4

BB: 1,065.00
Hero (SB): 1,935.00

Hero posts SB 5.00, BB posts BB 10.00

Pre Flop: (pot: 15.00) Hero has 7 9

Hero raises to 20.00, BB raises to 30.00, Hero calls 10.00

Opp 3bet steal 22%

Flop: (60.00, 2 players) Q 8 3
BB bets 10.00, Hero calls 10.00

Cbet flop after 3bet pf 50%

Turn: (80.00, 2 players) 5
BB bets 20.00, Hero ? (call in actual hand)

Here is spot when i get confused if we can call...
Cbet turn 100%, no information about action if get raised.

River: (120.00, 2 players) K
BB bets 20.00, fold

next hand...

PokerStars - $14.29+$0.71|10/20 (2 max) - Holdem - 2 players
Hand converted by PokerTracker 4

SB: 1,125.00
Hero (BB): 1,875.00

SB posts SB 5.00, Hero posts BB 10.00

Pre Flop: (pot: 15.00) Hero has J Q

SB raises to 20.00, Hero calls 10.00

Opp steal 55%

Flop: (40.00, 2 players) 4 6 K
Hero checks, SB bets 10.00, Hero calls 10.00

opp cbet 67%, no information about action when get raised.

Turn: (60.00, 2 players) 4
Hero checks, SB bets 20.00, hero ?

opp Cbet turn 100%
Can we call here versus this player? we call any river if call here?

What should be default lines in both hands?
Is theses decisions close?

When he checked back the turn 33% of the time, did he give up or have good hands?

he is cbetting 100% turns ip and oop (said at original post).
If you was thinking flop, i have seen him slowplaying flop good hands.

Yeah I meant flop. This sounds like backwards play to me. He wants to appear strong when weak and weak when strong. Do you see where I'm going?

Yeah, it seem like it... but i am not thinking that he is understanding what he is doing, he is like overplaying weaker hands but fearing to not get paid with best hands in impulsive way imo.

Right. So that makes his flop cbet range weak, and therefore his turn cbet range is weak as well(hand 2.)

yeah, probably most times but not sure if that dangerous board with that many bad rivers to come can beat even that range plus that range is made up by 22 hands what is pretty small sample.

Both hands i fold flop, given the players bettin behavour, against an unknown I would have played first hand the same, second I fold turn.