Rigidbody 3D Sticking issue

How would I go about writing a code that checks for wall collisions and says hey if the rigidbody hits wall, the player rigidbody can no longer move towards the wall and must move left or right in either axis (x,z).

Also I don't want to use physics material because it will clash with future plans...

-Also im having issues with my player cords going into scientific notation which affects my jumping in some instances.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 [RequireComponent(typeof(Rigidbody))]
 public class Player : MonoBehaviour
 {
     public float movementVelocity;
     Vector3 forward;
 
     public float rotationSpeed;
     Quaternion rotate;
 
     public float jumpVelocity;
     public float fallMultiplier;
     public float lowerJumpMultiplier;
 
     private bool isGrounded;
 
     public Rigidbody playerRigidbody;
 
     void Start()
     {
         playerRigidbody = GetComponent<Rigidbody>();
     }
     //-----//
     void Update()
     {
         _Jump();
     }
     //-----//
     void FixedUpdate()
     {
         Move();
         _Rotate();
     }
     //-----//
     void Move()
     {
         forward.x = Input.GetAxisRaw("Horizontal") * Time.deltaTime;
         forward.z = Input.GetAxisRaw("Vertical") * Time.deltaTime;
 
         var velocity = new Vector3(forward.x, 0, forward.z).normalized * movementVelocity;
         velocity.y = playerRigidbody.velocity.y;
         playerRigidbody.velocity = velocity;
     }
     //-----//
     void _Rotate()
     {
         if (forward != Vector3.zero)
         {
             rotate = Quaternion.LookRotation(forward, Vector3.up);
 
             playerRigidbody.rotation = Quaternion.RotateTowards(playerRigidbody.rotation, rotate, rotationSpeed);
         }
     }
     //-----//
     void _Jump()
         // "Better Jump" Provided By: Board To Bits Games //
     {
 
         if (Input.GetButtonDown("Jump") && isGrounded)
         {
             playerRigidbody.velocity = Vector3.up * jumpVelocity;
             isGrounded = false;
         }
 
         if (playerRigidbody.velocity.y < 0)
         {
             playerRigidbody.velocity += Vector3.up * Physics.gravity.y * (fallMultiplier - 1) * Time.deltaTime;
         }
 
         else if (playerRigidbody.velocity.y > 0 && !Input.GetButton("Jump"))
         {
             playerRigidbody.velocity += Vector3.up * Physics.gravity.y * (lowerJumpMultiplier - 1) * Time.deltaTime;
         }
     }
     //-----//
     void OnCollisionEnter(Collision other)
     {
         if (other.gameObject.tag == "Ground")
             isGrounded = true;
     }
 
 }