How to Spherecast/Raycast diagonally?

This is the script I am using right now.

Radius is a variable representing the radius of the spherecast. Distance is the variable representing the distance of the spherecast RayPos is a variable representing the origin of the spherecast

var Hit : RaycastHit;

 //This one works
 if(Physics.SphereCast( RayPos, Radius, transform.forward, Hit , Distance))
 {
     if( Hit.collider.tag == "Player")
     {
          Debug.Log( Hit.distance);
     }
 }
   
     //This does not work.
     //This is meant to spherecast 45 degrees to the right.
 if(Physics.SphereCast( RayPos, Radius, Vector3(1,0,1), Hit , Distance))
 {
     if( Hit.collider.tag == "Player")
     {
          Debug.Log( Hit.distance);
     }
 }

      //This does not work.
      //This is meant to spherecast 45 degrees to the left.
 if(Physics.SphereCast( RayPos, Radius, Vector3(-1,0,1), Hit , Distance))
 {
     if( Hit.collider.tag == "Player")
     {
          Debug.Log( Hit.distance);
     }
 }

Extra Info about what I want to do. I want to detect the capsule which is standing infront the stairs but the lady with the black clothes only detects the capsule if it is infront him.