wp-login and wp-admin redirect

This could be a problem with your webserver configuration.
Does visiting https://example.com/blogs work for you? If it also redirects to https://blog.example.com/ then take a look at your webserver config. There is probably a config doing a rewrite / redirect.

In nginx, it would be similar to:
if ($http_host != “blog.example.com”) {
rewrite ^ https://blog.example.com$request_uri permanent;
}
or
location /blog {
rewrite ^ https://blog.example.com$request_uri permanent;
}

Yes, i can access my website root, asswell as posts, members etc, EXCEPT wp-login and wp-admin by going to https://example.com/blogs/

Also, https://blog.example.com/wp-admin/ does not exist, only https://blog.example.com/wp-admin/ exists!!!