An Alternate Way of Using Nextcloud
Setting up a Raspberry Pi 4 with 2gb of memory to work as a Nextcloud server is quite easy. Download the right ISO from nextcloudpi.com, flash it, put the card into your pi device and after two or three more steps you have a local machine running Pi but you still need to setup port forwarding, open a UPnP port to access the server externally and other steps.
The simpler solution is to download the Nextcloud app on your phone, as well as for the desktop/laptop that you’re using. I set it up so that any picture I take is automatically synced to a server in Holland. As soon as I take a picture it syncs to the cloud. The images are then synced from the cloud to my local machine, and from there I can archive them either to an external hard drive or another local Nextcloud instance. Once the images are synced I can remove them from the mobile phone, saving money, and reducing the need for an expensive higher capacity phone.