Repo for Rhel 7.7

There is an OS Rhel 7.7. An expanded set of packages is required. It can be obtained by a paid subscription, or you can use CentOS repositories at your own risk. Before that, I did and there were no problems, but at some point I did yum update and after the changes made, Rhel flew. I began to study the issue and the thought arose instead of using the CentOS repository to use Fedora repositories, namely the RPM Fusion repository, since this product is essentially closer to Redhat. Can I somehow appreciate this idea? Thanks in advance.