I really do apologise for what is likely a stupid question, but I currently on my first venture beyond Ubuntu and I’m hitting a couple of roadblocks.
What bootloader is Fedora using? Grub2? I’m curious as having installed Grub Customizer as I always have on Ubuntu, it is only showing my Windows install, not Fedora and the Bootloader itself is already ‘bloated’ by three Kernel Versions (x09,x11,x13) so I’m looking for a way to clean it up.
I would advise you not to remove older kernels or lower the installonly_limit=3 parameter. New kernels can easily come with bugs and be unbootable. In that case, you will be quite happy if you have an older kernel available!