I want to make a character jump and crouch without using boolean

I want to make a character can crouch and detect that there is something up the character by way of Raycast and that skipping with raycast and collision detector but I do not want to use bolean because I want the character movement to be more fluid, thanks in advance here is my very simple script:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Movement : MonoBehaviour { Animator Anim;

 bool isAiming = false;

 const float WALK_SPEED = .5f;

 void Awake()
 {
     Anim = GetComponent<Animator> ();
 }
     
 void Update()
 {
     Aiming ();
     Move ();
 }
     
 void Aiming()
 {
     if (Input.GetKeyDown (KeyCode.Mouse1)) {
         isAiming = !isAiming;
         Anim.SetBool ("Aiming", isAiming);
     }
     if (Input.GetKeyUp(KeyCode.Mouse1)) {
         isAiming = !isAiming;
         Anim.SetBool ("Aiming", isAiming);
     }
 }


 void Move ()
 {
     if (Anim.GetBool ("Aiming"))
     {
         Anim.SetFloat("MoveZ", Mathf. Clamp(Input.GetAxis("MoveZ"),-WALK_SPEED,WALK_SPEED));
         Anim.SetFloat("MoveX", Mathf. Clamp(Input.GetAxis("MoveX"),-WALK_SPEED,WALK_SPEED));
     }
     else
     {
         Anim.SetFloat("MoveZ", Input.GetAxis("MoveZ"));
         Anim.SetFloat("MoveX", Input.GetAxis("MoveX"));
     }
 }

}