How do I fix this?

i have a zombie survival game

but there's a slight problem the zombie cant go though me

but it can go though walls

the walls and player both have soild behavors so does the zombie

but the zombie is set to change the angle towards the player every tick and has bullet behavoir.

i have attempted to fix this many times

please help

Set the bullet behaviour to bounce off solids?

In the end you're going to want to look into path-finding, but zombies aren't exactly the smartest of creatures..