Crash every 10-20 minute

When I play Minecraft, the game crash every 10 to 15 minutes! And when I enter the game again, I am in there where I was last saved. It’s a pity because some stuff in my inventory disappear (like a shulker box when I opened before) + some of my villagers and Irongolems disappear as well.
Please fix the bug as fast as u can! Thank you!