Can you help me install a Webserver, MariaDB, PHP, FTP, Mailserver?

We recommend Virtualmin for Webhosting. Virtualmin is a web hosting control panel for servers.  There is a free and paid option.  

Virtualmin can be installed automatically on common operating systems like Debian, Ubuntu, Alma and Rocky Linux

Make sure you are using a fully qualified domain name as your hostname e.g. server1.yourdomain.com

connect to your server via SSH with root or a sudo user and run the following commands:

hostnamectl set-hostname server1.yourdomain.com

wget https://software.virtualmin.com/gpl/scripts/virtualmin-install.sh

sudo sh virtualmin-install.sh

For further assistance please open a ticket. 

Some commercial alternatives are Plesk, cPanel, DirectAdmin.