I’m having this same issue, and none of the solutions presented help (unless I don’t know how to edit the database). Has anyone found any other solutions?
I have a site with an older WP 6.1.2 that works fine, and I didn’t click Trust on the SSL. The non-working site is freshly created, trie with Trust and without. The WP version is 6.2.2.
I also get a strike-through in the https when clicking the WP Admin button and a security warning page. I have not clicked Trust on the SSL yet as that seems to permanently break it.
If you create a new, blank site are you able to access that admin okay?
Does this site have any security or redirection plugins that could be masking the login page? Something like WPS Hide Login. You could open a site shell, and use WP-CLI to deactivate all plugins just to check if something in there is blocking as well.