ccleaner... If your data is not on another device... GAME OVER.

I found a file in my mobile Firefox browser, where are the links I need, but I don't know how to export and import in the notebook Firefox browser.

OUTSTANDING!!!

FYI... Firefox Sync IS NOT A DATA BACKUP SERVICE https://support.mozilla.org/en-US/kb/how-do-i-set-sync-my-computer https://support.mozilla.org/en-US/kb/how-do-i-choose-what-information-sync-firefox

You can use sync to send tabs. see screenshot

The simple move would be to sign into the same Mozilla account on both devices and and then from your computer, you can see the tabs on the phone and just open them on the computer. see screenshots

Bookmarks should just appear on the computer via the sync process. Whenever I install a new version of Firefox and then sign into my account, it's cool to see things automagically populate. Let us know how it goes.