Ah! I’m bouncing and clipping!

Ah, yes, the bugs are back in town! I did not want to post two questions in one day so that’s why I did not ask this yesterday. I have two issues. The first one being my character is clipping through the climb of a hill when I run.

Script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Movement : MonoBehaviour
 {
     public float x, y, z, rotX, rotY;
     public GameObject cam;
     public float sens;
     public float speed = 20;
     public Vector3 deltaMove;
 
 
     void Start()
     {
         Cursor.lockState = CursorLockMode.Locked;
     }
 
     void Update()
     {
         
         
         transform.Rotate(0, rotX * sens, 0);
         cam.transform.Rotate(-rotY * sens, 0, 0);
 
         x = Input.GetAxisRaw("Horizontal");
         z = Input.GetAxisRaw("Vertical");
         rotX = Input.GetAxis("Mouse X");
         rotY = Input.GetAxis("Mouse Y");
         if (Input.GetKeyDown(KeyCode.Space)) y++;
         if (Input.GetKeyUp(KeyCode.Space))
         {
             while (y <= 1)
             {
                 y += 0.1f;
             }
         }
         //if (Input.GetKeyDown(KeyCode.LeftControl)) y--;
         if (Input.GetKeyUp(KeyCode.LeftControl)) y++;
         if (Input.GetKeyDown(KeyCode.LeftShift)) speed = 20;
         if (Input.GetKeyUp(KeyCode.LeftShift)) speed = 10;
         deltaMove = new Vector3(x, y, z) * speed * Time.deltaTime;
         transform.Translate(deltaMove);
 
     }
 }

That is literally the only script I have in the project! (Coming from using core language graphics programming like DX in C++ or Java it is barely anything!) the second thing is my character is bouncing after I jump but I have no physics objects just a Rigidbody! Thanks!

Update: I HAVE FIGURED OUT HOW TO STOP THE BOUNCING BUT STILL NOT THE CLIPPING. I ALSO NEED TO KNOW HOW TO KEEP GOING UP UNTIL I SAY TO FALL AGAIN.