First of all, thanks for the reply.
sudo dnf install <software_name>
is no good. The software I want to install is never available despite being popular (eg. Tutanota).
However, today I managed to find out how to do it. After scouring the internet, I finally found a command that allows me to install via AppImage. After downloading the app image and making executable, I’m unable to run the appimage due to an error, “cannot mount appimage please check your fuse setup”. This is on Fedora (templateVM). The error says I should use --appimage-extract, but I don’t know the full command for this to be useful information. Finally I discovered you can run executables by using ./file-name.AppImage. I ran ./file-name.AppImage --appimage-extract which extracted a squashfs file. Unsure what to do at this point, I entered that folder (file explorer) and clicked on the executable, which opened the app. I wasn’t sure if it was installed at that point, but after refreshing the qube, it suddenly appeared in the applications list of the qube manager.
There’s nothing on the internet that explains this process. I just wonder, assuming you have to install via an appimage, is there an easier way to do it? I’m well aware that the easiest way to install apps is via simple “dnf install” or “get-apt” or via software managers, but this was not possible in my situation. I tried using flatpak (or is it flathub?) but that didn’t work.