When you play properly, you will receive a lot of bad beats. The fact that you are getting bad beats tells me that you are making good decisions. While that doesn’t really help you not lose with kings, it should reinforce that you are making good decisions and to continue to do so.

If the appropriate move is to go all in with kings preflop, then do so. If someone moves all-in against you preflop and you hold kings, you probably should call. Only one hand can beat you. Sometimes you may be able to put someone on pocket aces. If you truly feel they are on aces, and a fold is prudent, then by all means go with your reads. Otherwise, call with your kings.