For learning system administration, I think Cent OS Stream can be a great choice. Not because it offers something special than others but because it would familiarize you with the RHEL/Fedora family and in my experience majority of enterprise-servers are using one of its family members, be it RHEL, the former CentOS, Oracle Linux, Amazon Linux or some other variant.

Don’t you have the option to use the Chromium Edge at your workplace? At least it has better features as compared to Chrome. My employer has all 3 of Chrome, FF & Edge installed but I use Edge over FF at office because they don’t allow 3rd party extensions.