Instead of Titanium Backup (which I paid for long ago and highly recommended back in the day), a more modern and mantained solution that has been rock solid for me is Swift Backup: https://play.google.com/store/apps/details?id=org.swiftapps.swiftbackup

And for regular folder backups I haven't found a better alternative than Folder Sync Pro: https://play.google.com/store/apps/details?id=dk.tacit.android.foldersync.full (Has a free version if you want to try it)