I'd like to have Signal (signal.org) on my GrapheneOS driven Pixel. I do not found this app in F-Droid. If I go to https://www.signal.org I get a DL-Button and been forwarded to the Google-Store (where I have to crate a account).
Is this the correct (secure) way to get the app? As far as I know there are no Google related SW in GrapheneOS?