If you have a Google account, there is 15 GB of free storage at GDrive.
You have to distinguish between export and backup.
Backup saves all tracks, points and settings. They are not available individually, but only as a database zip. You can backup locally and to the cloud. There is also an automatic backup. But you can also do it manually.
When exporting, the individual points or tracks are exported as GPS, KML, etc.. This is only possible individually or the entire folder.
The automatic export when saving a new track you can set in the recording settings.
The backup can be found under Menu / All Functions (bottom right) / Setup / Backup Manager.
More info can be found in the manual:
https://docs.locusmap.app/doku.phpQuestions and problems are best asked or reported in the helpdesk.
https://help.locusmap.eu/ Translated with
www.DeepL.com/Translator (free version)