Move away from snapped Firefox on Ubuntu

Keep it simple and just unpack official Mozilla's archive into some home
subdirectory doing next simple steps.

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Choose and download Firefox tarball for a language you prefer from
https://ftp.mozilla.org/pub/firefox/releases/116.0/linux-x86_64/
You can find another versions there: esr, beta or even nightly.

Untar this
$ tar xf firefox-116.0.tar.bz2

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We got a 'firefox' folder with Firefox Browser. Move it to some suitable place.
I prefer a folder where Firefox stores it's data - ~/.mozilla. But since
~/.mozilla/firefox already exists and consists user profiles give 'firefox'
binary folder another name. I named it 'firefox_bin' there:

$ mv firefox ~/.mozilla/firefox_bin

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Create a shortcut to Firefox executable in a main menu by placing this to
~/.local/share/applications/Firefox.desktop

[Desktop Entry]
Name=Firefox Browser
Type=Application
Categories=Network;WebBrowser;
Exec=/home/vall/.mozilla/firefox_bin/firefox-bin
Icon=/home/vall/.mozilla/firefox_bin/browser/chrome/icons/default/default128.png

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Final step is to remove all that fat garbage
$ sudo apt purge firefox snapd
$ sudo apt autoremove

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If Firefox runs with an empty profile you can find old one and manage profiles
in about:profiles.