Key bindings (CTRL-T / CTRL-R / ALT-C) and fuzzy auto-completion may not be enabled by default.
Refer to the package documentation for more information. (e.g. apt-cache show fzf)
I use the default Gnome shell and installed fzf from the Fedora repository.
As it says, see the package documentation,
To enable shell key bindings, source the applicable script from
/usr/share/fzf/shell from your shell initialization. For example, use
/usr/share/fzf/shell/key-bindings.bash in ~/.bashrc for user-wide bash.
Here’s the snippet I have in my
# fzf on Fedora
if [ -x "$(command -v fzf)" ]