Created the best movement controller there is

Assets/PlayerController.cs

@@ -0,0 +1,71 @@
+using UnityEngine;
+using UnityEngine.InputSystem;
+using System.Collections.Generic;
+
+public class playerController : MonoBehaviour
+{
+	public float moveSpeed;
+	public float jumpStrength;
+	public float airSpeed;
+	public float mouseSens;
+	InputAction move;
+	InputAction jump;
+	InputAction look;
+	float camVertRot = 0f;
+	bool grounded;
+
+    void Start()
+    {
+		Cursor.lockState = CursorLockMode.Locked;
+		Cursor.visible = false;
+        move = InputSystem.actions.FindAction("Move");
+        jump = InputSystem.actions.FindAction("Jump");
+		look = InputSystem.actions.FindAction("Look");
+    }
+
+    void Update()
+    {
+		Vector2 movement = move.ReadValue<Vector2>().normalized;
+		Vector2 lookment = look.ReadValue<Vector2>();
+		if (grounded) {
+			GetComponent<Rigidbody>().linearVelocity = transform.TransformVector(new Vector3 (
+				movement.x * moveSpeed,
+				(jump.IsPressed()) ? jumpStrength : 0,
+				movement.y * moveSpeed
+			));
+		} else {
+			GetComponent<Rigidbody>().AddForce(
+				movement.x * airSpeed,
+				0,
+				movement.y * airSpeed
+			);
+		}
+		gameObject.transform.Rotate(0, lookment.x * mouseSens, 0);
+		camVertRot -= lookment.y * mouseSens;
+		camVertRot = Mathf.Clamp(camVertRot, -90f, 90f);
+		foreach (Transform child in transform) {
+			child.localEulerAngles = Vector3.right * camVertRot;
+		}
+    }
+
+	private bool checkgrounded(Collision col) {
+		List<ContactPoint> points = new List<ContactPoint>();
+		col.GetContacts(points);
+		foreach (ContactPoint contactPoint in points) {
+			if (contactPoint.point.y < gameObject.transform.position.y - 0.95) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	private void OnCollisionStay(Collision col) {
+		if (checkgrounded(col))
+			grounded = true;
+	}
+
+	private void OnCollisionExit(Collision col) {
+		if (!checkgrounded(col))
+			grounded = false;
+	}
+}