Game keeps crashing

So I'll start off with I'm not very good at computer stuff in general. I really only use my mine to play ck3 and total war. Anyways ever since the last few updates to ck3 the furthest I can get into the game is picking a character to play as, the second I load into the map and try do anything the game freezes and then crashes. Is anyone else having this problem? Am I doing something wrong? I don't know what kind of computer I have (it was a Christmas present last year), so I dont know if my pc just can't handle the new update or I have to change the picture setting maybe? I don't know any help would be greatly appreciated.