I 🎮 on Bazzite

Wait till you learn about Distrobox and Distroshelf.
Make a Fedora and Ubuntu box to install .rpm and .deb apps to your Bazzite host, when you need to install things not available as flatpak or homebrew. Since layering apps with rpm-ostree can get messy/ugly.
Have all three. 🤯
For various ways to install apps on an atomic image based OS:
Also checkout Project Bluefin and Aurora.