You can either use your GNOME Software and search for “Bavarder” or you can run
flatpak install io.github.Bavarder.Bavarder
Clone the repo and run flatpak-builder
git clone https://codeberg.org/Bavarder/Bavarder.git # or https://github.com/Bavarder/Bavarder.git
cd Bavarder
flatpak-builder --install --user --force-clean repo/ build-aux/flatpak/io.github.Bavarder.Bavarder.json
Bavarder is available in the AUR. Just use your favourite aur helper!
yay -S bavarder
Thanks to Soumyadeep Ghosh, Bavarder is available as a snap.
Or run sudo snap install bavarder