How to Install Freetube and Brave Repo on fedora

There is no repository for freetube. There are deb/rpm packages available for download:

You can download the package, move it to the template and install it there, e.g. for debian:

sudo apt install /path/to/freetube_0.21.3_amd64.deb

But it won’t be updated automatically and you’ll need to download and install new versions manually.
You can install the freetube in the template using flatpak, then it’ll be updated automatically: