I think the more important question to resolve first is, is this a beatable game for you? Considering this is winner takes all it doesn't matter if there are four players worse than you if there is one that is better.

I understand the frustration very well though since I play with a bunch a jackasses a few times a week. My 5x BB raises will get called by 4-5 players. Aces and Kings are constantly getting cracked like eggs. I get to see the most implausible scenarios unfold on a nightly basis and witness so many runner-runner suckouts I fell like I'm in a marathon.

One thing I've learned is to look for the most uncoordinated flops possible since you can generally expect a couple of your opponents to have suited or near touching cards. I can go with TPTK in this situation, however if there are two to a flush or two cards with straight potential I tend to back off since I often have 4-5 players to deal with; so even if I'm ahead there is little I can do to knock anyone out of the pot nor protect my hand against the draws.

The other thing I'm looking for are flops that coordinate well with my cards and have strong redraw potential. Pairs with straight draws or flush draws are hands I will look to push with. OESD + flush draws I'll go with if getting the odds.

Pay attention to your opponents holdings and betting patterns especially when they are pushing. I've noticed that really poor players will give you info for free when they push a pot and no one calls.

Lastly, don't let the results discourage you from doing what is correct. Don't stop raising with premium hands because they keep getting cracked. Prevent bad habits that are result orientated from affecting your play because you still need to carry your game to other tables with other players. Against bad players play simple staright forward poker.