Install DNF on workstation

Hello All

Just wanted to know if anyone can recommend a resonable safe 3rd party repo for dnf ?, i need some multimedia tools and rpmfusion has the majority of tools i need but i need the latest dnf version

I have found the following link

https://www.ostechnix.com/install-dnf-centos-7/

But thought id check if anyone knows anything more reputable.

Kind Regards