How do I fix error CS1022 C#, if I delete it, more errors appear, why?

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

namespace RareCoders
{

    public class PlayerManager : MonoBehaviour
    {
        public InterAd interAd;
        int Count;

        #region Private Variables
        private float currentPosition;

        public float speed;

        public float maxSpeed = 5f;

        WaitForSeconds _waitTime;

        Coroutine speedCoroutine;

        Vector3 _scale;

        Vector3 _position;

        public UIController _uiController;

        public GameObject crashEffect;

        [SerializeField]
        Color[] bgColor;

        [SerializeField]
        float colorLerpDuration;

        Camera _cam;

        int randomColor;

        Color _FirstColor, _secondColor;

        bool lerpBG = false;

        float _time = 0f;
        #endregion
    }
    private void OnEnable()
    {
        _cam = Camera.main;
        //TheGlobals.playingMode = true;
        _waitTime = new WaitForSeconds(1f);
    }

    private void Update()
    {
        if (TheGlobals.playingMode)
        {
            DetectInput();

            if (lerpBG)
            {
                Color color = Color.Lerp(_FirstColor, _secondColor, _time);
                _time += Time.deltaTime / colorLerpDuration;
                _cam.backgroundColor = color;
                if (_time > colorLerpDuration)
                {
                    _time = 0;
                    lerpBG = false;
                    _FirstColor = _secondColor;
                }
            }
        }
    }

    // Update is called once per frame
    //void FixedUpdate()
    //{
    //    if (TheGlobals.playingMode)
    //    {
    //        currentPosition = transform.localPosition.y;
    //        currentPosition = currentPosition + Time.deltaTime * speed;
    //        transform.localPosition = new Vector3(transform.localPosition.x, currentPosition, transform.localPosition.z);
    //    }
    //}

    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.layer == 8)
        {
            TheGlobals.sManager.allAudio[2].Play();
            crashEffect.transform.position = transform.position;
            crashEffect.SetActive(true);
            Camera.main.GetComponent<CameraShake>().ShakeCamera(0.4f);
            _uiController.GameOver();
            Destroy(this.gameObject);
            Count += 1;
            PlayerPrefs.SetInt("Dead_Count", Count);
            if (PlayerPrefs.GetInt("Dead_Count") == 3)
            {
                IntReclama.Show();
                PlayerPrefs.SetInt("Dead_Count", 0);
            }

        }
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.gameObject.layer == 9)
        {
            TheGlobals.sManager.allAudio[1].Play();
            collision.gameObject.SetActive(false);
            lerpBG = true;
            randomColor = Random.Range(0, bgColor.Length - 1);
            _secondColor = bgColor[randomColor];
        }
    }

    void DetectInput()
    {
        if (Input.GetMouseButtonDown(0))
        {
            InversePlayer();
        }
    }

    void InversePlayer()
    {
        _scale = transform.localScale;

        _position = transform.position;

        _scale.x = _scale.x * -1;

        _position.x = _position.x * -1;

        transform.localScale = _scale;

        transform.localPosition = _position;
    }

    public void SpeedIncrement()
    {
        speedCoroutine = StartCoroutine(speedManager());
    }

    public void StopIncrement()
    {
        StopCoroutine(speedCoroutine);
    }

    IEnumerator speedManager()
    {
        yield return _waitTime;

        if (speed < maxSpeed)
        {
            speed += 0.05f;
        }
        Debug.Log("Playing Mode " + TheGlobals.playingMode);

        if (TheGlobals.playingMode)
        {
            speedCoroutine = StartCoroutine(speedManager());
        }
    }
  } 
}