[donkeykong2]

dont do contibets against 3 opponents out of position. be careful on paired boards too, i might make a half pot bet on those if there arent too many opponents (2 or less, maybe 3 in position).

hand 1:
i wouldnt raise this preflop with 8 players in early position. you might try to steal with half pot on the flop. if u didnt and if they check very quickly and seem uninterested in the pot you might try a bluff on turn or river.

hand 2:
wouldnt raise preflop and wouldnt c-bet here, you have no flush draw and just toppair out of position against 3 opponents. you re easily dominated by aq.

hand 3:
tough to play, i like to call the flop like you did and bomb the turn if no straight card hits on the turn. looks like he has kq or kk so river is probably foldable, reads would help here.

hand 4:
dont cbet, too many players and 3 to a flush. you might do it if you had the ace of spades and fire again on the turn.
i d usually not bet the turn here too as you will be called by the flush and dont give up too much by checking.