Installing Cinnamon desktop on fedora is very easy. You can execute the below command from your terminal.
sudo dnf install @cinnamon-desktop
How to change existing desktop
You can restart your fedora system & while signing in you can select it from a available options settings which is present alongside signin button.
You can also install other fedora Desktop,
Mate Desktop on Fedora
dnf install @mate-desktop
KDE Desktop on Fedora
dnf install @kde-desktop
For more information about other available desktop spins you can visit here : https://spins.fedoraproject.org/
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