How to achieve antiAliasing in VR (Oculus Rift S and Quest)

My problem is how can I get rid of jagged edges in my scene, especially with UI elements.

HDRP is not supported for oculus quest apk. I have tried the following things but neither solves my problem:

1. quality setting anti Aliasing set tp 2X multi-sampling
2. CenterEyeAnchor Camera's rendering path to forward, turn on MSAA.

Here is the script i have attached in the scene:

using UnityEngine;
using UnityEngine.XR;

public class VRRenderScale : MonoBehaviour {
    void Start () {
        XRSettings.eyeTextureResolutionScale = 1.5f;
    }
}