Trouble with installing Firefox

Hello, I’m currently trying to install Firefox.
I finished the setup of Flathub and executed the following command:

flatpak install flathub org.mozilla.firefox

I get ‘Nothing matches org.mozilla.firefox in remote flathub’ in response.

How do I solve this?

Thanks in advance!

Let me guess: you are not running on a x86_64 PC.

No I am not, why? As far as I can see it doesn’t state that I need to anywhere?

Turns out the package is x86_64 only source (comment by hub in another thread)