Rigidbody impossible control

I have jumping fixed
I have grounding checks fixed
However no matter what i do…physics materials or w/e
when i get to a corner of 2 walls i can ALWAYS fall out of the level. Physics materials do help though but corners cannot be stopped? Also if you get hit while moving fast you can be blown right out of the level…how can you stop rigidbodies massive issues when it comes to walls?

why is it so impossible to have a hard lock on walls regardless of your speed? why is something so simply required for nearly every game so difficult? kinda funny really…

Let me guess… youre using Translate to move?