We'd love to suggest an alternative way of backing up your seconds; however, due to Android's extensive segmentation, this is very hard.
If you're moving to a new phone, you may be able to back up all or some of the app's data—depending on your device's maker. If you're moving from one Samsung phone to another, Smart Switch can accommodate you. If you move from one Motorola device to another, they have a migration tool, as well.
Without a PRO subscription, you can back up the last year of one of your Timeline projects for free. If you want to back up more than a year, start your free 14-day trial of PRO today!