My Galaxy Watch 46mm frequently will dissonect from my phone suddenly. Then I have trouble reconnecting it. Hitting connect in the Wearables app only sometimes fixes it. I also try to turn off the watch to restart it but when I hit the power button the watch just freezes and then eventually goes back to the home screen. Eventually when I do mange to turn it off it fixes the problem only for it to happen again a day or two later.
Good morning @userC7oeSpMvk0 I'm sorry to read about your frsutations with keeping your Galaxy Watch connected to your device.
Try this: Start from scratch. In your Galaxy Wear app scroll to the bottom where it says "about watch" tap it> next scroll to the very bottom of the page under "looking for something else" will be the reset option. Rest your Galaxy Watch.
I would also recommend Uninstalling the Galaxy Wear app then reinstalling it again then go through the process of repairing it to your device. Usually that works.