My "cloud" is Proton. So I use pretty much all of their services, though not as much Drive, mainly because there doesn't seem to be a way to automatically back up anything but pictures/videos (and then only from your phone/tablet).
I've got a pair of UnRAID servers in different locations that sync to each other using rsync commands.
On my main unraid box I have an Immich server and a plex container.
My computer runs Fedora and I use cron and rsync to auto-copy important files/folders to my unraid servers.
I technically have a smartwatch from before I became more privacy conscious, its a Samsung and its not connected to any devices. In fact, I leave it in airplane mode with Bluetooth and WiFi turned off.
I did recently pre-order one of the new Pebble Time watches. My Pebble Time Round was an amazing gadget that I wish I still had.