[autobet]

You should play fewer hands. Bluffing is useless. Your big draws should be played strong as they will show much of your profit getting multi-way action.

Once you are in the blind with a hand like 55 you should go ahead and call. Yes, you need to flop a set as 4-5 people are going deep into the hand and 55 will probably not be any good even if it is good on the flop.

Big Suited cards play well in these game. Of course you are still playing AK, AQ, KQ suited or not. With 4+ players seeing every flop you can usually play your medium pairs profitably and big pairs always show a profit in the long run even though they will get beat over half the time in these kinds of games.

These kinds of games are easy to beat in the long run. These game attract the worst players in poker who repeatedly make the worst kind of mistakes. You need patience and the ability to stand the swings.