I use a burner phone whenever I leave the country to avoid having deeply personal information in it if I'd ever be asked for a password. Because I don't want any of my files to be backed up on some government server, I also don't take any pictures even when there are moments I wish I could.

How easy is it to create your own personal server and forward pictures from your phone over to it? I plan to delete the local images afterward to avoid having them in case a border guard demands my burner phone's password. Are there any guides that are easy enough to work with using a raspberry pi and a flash drive?