Sorry that you are having trouble with your Watch, please Try using Samsung Smartthings which has a Find my Device feature , If you check the settings for your watch there is Find My Watch and it opens the in Smarts
Go to the home screen (the main watchface) and swipe up from the bottom bezel to bring up the app tray. Tap the app that looks like a rectangle with a magnifying glass on it. From there, you will be walked through the find my phone setup. You can also configure the home button to work as a shortcut to bring up find my phone by going to settings>advanced>customize buttons
