[Black winter day]

Hand 1 - i probably fold the flop without strong reads that this player is a donkey since i hate playing for my stack with TP second kicker.

Hand 2- seems ok, but with 8 people to the flop in unraised pot i'd play 68s for straights, not for flushes.You can lose a lot of money in flush over flush scenario and with so many players seeing the flops it's very likely.
And i'd check-call the river, unless you can fold to a reraise.Looks like BB either has a set or a bigger flush.
You have to be able to fold in case 2.