After so many hours the game is still crashing

I get in the game no problem but nice I load UT it says I’m not connected to internet and the load into UT, once in I’m fine in the menu for 15 minutes before crashing but once I play a game or moments I play for maybe 2-6 minutes before crashing sometime I can’t even play the full moments just straight up crashing! I get the messages shown in the images!