The following has been tested on Fedora 39 and Rocky 9

First – install the software

sudo dnf -y install xrdp xorgxrdp-glamor

edit /etc/xrdp/xrdp.ini

Find the line  [Xvnc]. Comment out that section by putting a # in front of it – and every line down to the line that starts with  [vnc-any] (or #[vnc-any])

Find the line #[Xorg] – remove the # from each line down to where you have #[Xvnc] (leave the # in front of [Xvnc])

Now execute

sudo systemctl enable --now xrdp

Now enable access through your firewall

sudo firewall-cmd --permanent --add-service=rdp
sudo firewall-cmd --reload