1. Upgrade Rocky to the latest

yum upgrade

Say yes to everything and wait

2. Apache installation

yum install httpd

Enable it on OS bootstrap with

systemctl enable httpd

Start it with

systemctl start httpd

Check if it is running with

systemctl status httpd

or use a browser pointing to http://ip-address. If you’re not receiveing anything try with a firewall role

firewall-cmd --add-service=http --permanent

Got this?

to install do

yum install mariadb-server mariadb

as for Apache do a

systemctl enable --now mariadb

systemctl start mariadb

and check if running with

systemctl status mariadb

make it secure with

mysql_secure_installation

you shoud remove everything and set a root password (when asked the root password is <empty>)

Do a

yum module list php

reset and install the correct version (7.4)

yum module reset php

yum module install php:7.4

restart apache to get php running

systemctl restart httpd