MAC CRASH

so it has been 3 patches where the game crashes on MacBook, i have seen a bunch of post about it and no one is doing anything ! it crashes mostly when you start fighting or when you die and sometimes it is just random. it is so annoying to die in the first 2 mins because you dc right after hitting the first minion or hitting a champion. why is it doing this on mac fix it plz it is so annoying , at first i was ok with it i tough its just once in a while but I'm at a point where it is doing it at least once a game in ranked or anything and i just can't handle it anymore