Minecraft crashes after being launched for a few minutes

So when I try to launch mc (I have the latest launcher) the mc loads up and the red progress bar goes up and then stops and freezes then when I try to close the window it says the game has stopped responding abd then it closes and brings the launcher back up saying that it crashed then when I look in the logs I get the following error:

// [Info: 2019-08-31 07:22:48.8468839: GameCallbacks.cpp(138)] Launcher/monitor (Process Monitor) Fatal Process crashed with exit code -805306369