If you can’t switch, wait until Fedora is forked to a new project, which is inevitable at this point given how dependent Fedora is on Red Hat for governance (source: docs.fedoraproject.org/en-US/council/), and it seems that Red Hat no longer wants Fedora (source: recent pivoting away from the community, and laying off the Fedora project lead in May and terminating the position).
I expect within a few years, you will be able to just change repositories and a signing key, and load whatever community-based Freedora replaces it.
I would avoid openSUSE which just wants to be another Red Hat (Aeon is just a shitty Silverblue and the project lead hates KDE) and SuSE in general has been hostile towards free software in the past and will likely do so again if they had to choose.
Arch, Debian, EndeavourOS, Solus, NixOS are community driven and unlikely to have some kind of corporate/hostile takeover.