It's annoying, but thankfully it's a single checkbox in the settings to disable it (uncheck "Suggestions from sponsors").
user_pref("browser.urlbar.suggest.engines", false);
user_pref("browser.urlbar.suggest.openpage", false);
user_pref("browser.urlbar.suggest.topsites", false);
user_pref("browser.urlbar.suggest.quickactions", false);
user_pref("browser.urlbar.suggest.recentsearches", false);
user_pref("browser.urlbar.suggest.quicksuggest.all", false);
user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false); /home/<user>/.mozilla/firefox/<name>/user.js
this file doesn't exist by default, there's caveats with how it is overwritten, etc. i don't know muchIt's probably easier to search for lists of things to disable in Firefox than go one per post anyways. One of the nice things about Firefox (other than the relative amount of these things) is the knobs to remove them usually exist somewhere for you to pull.
the whole relevant section is
> In Germany, France, and Italy, Firefox 156 displays localized Wikipedia suggestions and occasional sponsored results in the address bar. The feature is part of Firefox Suggest and supplements typed entries with relevant suggestions. According to Mozilla, these suggestions can be disabled in the Firefox Suggest settings.
I use Firefox because I believe in an alternative to Chrome, but they make it fucking hard to love Firefox.
And if you want an even more security hardened fork, LibreWolf.
Vanilla Firefox lost the plot a long time ago.
the actual "fix" is not changing config settings regularly broken/changed but with a proper fork actually delivering what firefox keeps promising such as librewolf and mullvad browser.