Why can't I install anything?

Every time I try to install something from flathub or from a .flatpakref it does not work; I am running Alpine Linux xfce where I was unable to install apps, I was trying to use it by opening up the web browser Then I tryed to use the code to command it to install app by writing the code into a terminal, but I had no luck. Will anyone tell me how can this be achieved?

We can’t help unless you share the error message you received.

Did you set it up?

Or are you running an ARM or PowerPC system?

I would like to attach a file on here so I can show you what I meant ok, but please show me how?