Yeah, I get that. I do, however, really like how FireDragon comes with a lot of the extension I'd like to use, and with searx as the default web search. It also takes almost no time to switch to a much better KDE layout as opposed to the seemingly script kiddie dr4a6onized default.
I wouldn’t use firedragon. It is a very outdated fork of librewolf, which is hardened even more. While librewolf is only a few days behind regular Firefox, firedragon sometimes is months behind making it a horrible choice for security.
I don’t think there are packages available, but even if why would you? Firedragon is just a heavily outdated fork of librewolf which itself is a slightly outdated fork of Firefox