Game Freezes

It feels like my game freezes SSOOO often when I'm playing, and I just get so angry. Like, if I'm in the middle of fighting a horde of zombies, a ton of creepers and skeletons, too; the game straight up freezes. But here's the thing: Even though I can't play, everything else happening in the world of minecraft is still running properly. So when my game is frozen, the mobs are just killing me during that time, and by the time it's unfrozen, I'm already dead. Same thing with water. If my game freezes while I'm swimming in water, I drown by the time it unfreezes. I can't do anything about it which just sucks. I would be super happy if this was removed.