I have Synology server at home. Once in a month when I put my phone on the charger I open up Synology Photos app on my phone to backup all the media to that. I

I have Synology server at home. Once in a month when I put my phone on the charger I open up Synology Photos app on my phone to backup all the media to that. I intentionally don't allow it run in the background because I don't want to drain the battery. This way I have full control and possession of my media. As a second(third) wave of defense I also have my Synology data automatically backup to Backblaze B2 cloud which is quite cheap.