No manifest was fetched

We checked your site in the lighthouse.

1.The manifest was not fetched due to — It Does not set theme color for the address bar and Is not configured for custom splash screen failures.

2. Does not register a service worker that controls page and start_url: For this, please refer to the below tutorial:
https://pwa-for-wp.com/docs/article/how-to-set-start-page-start-url/

3.Content is not sized correctly for the viewport size of 360px does not match the window size of 1366px.

TO solve the issue of viewport please follow this article:
https://web.dev/responsive-web-design-basics/