Game randomly crashing.

Since the 1.16.2 update, my game continues to crash randomly.  When I first updated, I couldn't get into my realm for most of the day.  Once I was able to get in, the crashes started.  I don't feel comfortable exploring at all, for fear of dying when my game crashes yet again.  
Initially before the update my game was lagging and I lost diamond gear and an excellent bow.  Now we've got the update and there's no lag, but continuous crashing.  Can you please fix this?!?!