My operating system is Kubuntu 20.04.
I installed Audacity by entering
flatpak install --from https://flathub.org/repo/appstream/org.audacityteam.Audacity.flatpakref
on my terminal. However, after I double clicked Audacity, it didn’t give me any responses. I tried to enter
flatpak run org.audacityteam.Audacity
on my terminal, but it showed
org.audacityteam.Audacity not installed