Sounds like a normal range for Bluetooth. The alternatives are WiFi (to have internet connection from the watch or even "Remote Connection" to your phone via Samsung, or LTE if your model has it.
(These take more power though.) My Galaxy watch is rather slow in auto-switching to WiFi, so I normally don't use it and haven't bothered with LTE. Perhaps WiFi is a solution for you (if you won't bring the phone with you.)