Bug I'm confused as to how to solve this bug

I wrote a coroutine by modifying some I found online to rotate to a specific angle then stop, and it works fine going in a full loop when hitting E, but when hitting Q if it's at 0 rotation, then it starts spinning wildly and doesnt stop, this bug does not occur if at rotations -90, 180, or 90. I am extremely confused as I am a new programmer and would appreciate any advice.

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

public class CameraRotate : MonoBehaviour
{
bool rotating = false;
int rotationAngle = 90;
[SerializeField] float rotationSpeed = 3;
void Update()
{

if(Input.GetKeyDown(KeyCode.E) && !rotating){
float targetRotation = transform.rotation.eulerAngles.y - 90f;
StartCoroutine(Rotate90(rotationAngle, targetRotation));
}

if(Input.GetKeyDown(KeyCode.Q) && !rotating){
float targetRotation = transform.rotation.eulerAngles.y + 90f;
StartCoroutine(Rotate90(-rotationAngle, targetRotation));
}

}

IEnumerator Rotate90(int Angle, float targetYRotation){
rotating = true;
Vector3 to = new Vector3(0, targetYRotation, 0);
while (Vector3.Distance(transform.eulerAngles, to)>1f){

transform.eulerAngles = Vector3.Lerp(transform.eulerAngles, to, rotationSpeed*Time.deltaTime);
yield return new WaitForEndOfFrame();
}

transform.eulerAngles = to;
rotating = false;
}
}