Installation for an absolute beginner

I’m also a newbie

Did the same thing on my Ionos web space.

Then I changed the htaccess like this:

Pass HTTP Authorization header via environment variable to PHP backend

to make HTTP Basic Authentication work for Apache/FastCGI/php-fpm

setups (required to authenticate over the API)

SetEnvIf Authorization .+ HTTP_AUTHORIZATION=$0 Options -MultiViews
<IfModule mod_env.c>
    SetEnv HTTP_MOD_REWRITE On
</IfModule>


# Uncomment this line depending of your Apache configuration
# RewriteBase /

#RewriteEngine On
#RewriteCond %{REQUEST_FILENAME} !-f
#RewriteRule ^ index.php [QSA,L]

############################
## Uncomment the two lines below to enable force HTTPS capabilities
############################

 RewriteCond %{HTTPS} !=on 
 RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [R,L]
ModPagespeed Off

now when I call my domain I get:
Verbindung zum MySQL Server erfolgreich aufgebaut.

Which looks good but I also don’t Know HowTo get that running

HOPE for HELP
PLS

PS:
my issue is here: