How to use colliders without rigid body

Hi, I am working on AI bots but when I created without rigid body collider it was not working and with rigid body it created a shield across to the AI bots, so the player can’t move inside that range. I am using a sphere collider. So how to get collider information without using a rigid body?

Maybe you can adjust the range of the collider you added.

The rigid body needs to be added to produce physical effects.
To get the collision body you can use getComponent() or add collision listeners and collision callbacks.
Of course, you can also use ray detection.
For physics issues, you need to refer to this document: Physics 3D · Cocos Creator