You are bypassing the admin URL but the admin bar is on the front page of your site. You can disable the bar all together in WordPress settings or just turn on development more when you’re working on the site and purge the cache after you’ve logged out.
Then this is your real cf-cache-status. This SXG bug atm forces MISS and therefore overwrites what it truly is - which is DYNAMIC for you. This btw also is the default at Cloudflare, since it by default does not cache HTML.
To enforce caching it, you have many options:
APO (just for Wordpress)
Workerbased caching (you have to do it on your own)
If the site is static, you can use Cloudflare Pages.
Since you seems to be using Wordpress, I would strongly recommendAPO.