I’m using a combination of iCloud and Syncthing. iOS syncs to my Mac with iCloud and Syncthing picks it up from there. For me it was about having a second copy, that I completely control, and not so much about getting rid of all Cloud services there. If, however, Syncthing could get into the depths of iOS file system, I would consider getting rid of iCloud.

Does AdGuard Home have proper IPv6 support meanwhile? I remember the lack thereof made me switch back to pi-hole a few years ago.