I just fold pre 50bb deep.

Post is played is w/e, ur committed pretty much. I'd just call flop and gii all but A turns.

I would usually defend this 50bb deep in position. But it makes for some awkward stack size spots post flop. Folding is fine if you feel you're likely to make mistakes.

Post flop I feel indifferent between calling flop or jamming. Top pair good kicker half stacked in a 3 bet pot is a get it in job mostly though.

Yeh this is fine we can't really do anything else.

I would fold pre given the sizing's , is there a reason for a 3x btn raise ? i would make it 2x even 2.5x , youll get the same amount of folds to steals but it allows you do defend a much wider range to 3bets.