Alright, since you're not giving me reads I'll push on assuming they're decent.

Hand one. Just call preflop. You don't need to defend your blinds since you can make up a lot of ground post flop. Check call the flop, don't raise. He'll put you on the flush draw. You can scare him off with a diamond if he has a better hand OR if the diamond draw misses and he really puts the screws down on you with a nice turn bet, you can put him on a strong ace. Weak lead the turn, attack any weakness on the river. (Weak raises or flat calls)

Hand two: Bet the flop and turn and win the pot. River is a good call. He probably has 5s with a missed OESD.

Hand three: Raise the flop. You've got the best hand and outs to make a better hand. Third pair won't enjoy calling.

Hand four: Can't say. I need to know the player.

Hand five: Looks fine.

-'rilla