For login admin panel : https://yourwebsite.com/admin_login/ or change from database after create a new account !
edit .htaccess if you have internal error
just to use PHP 7.4 and set folder app to permision to write like 777
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_URI} !public/
RewriteRule (.*) /public/$1 [L]
</IfModule>
htaccess