Well,u can try to use gadgetbridge.Maybe will work but not sure ur model quite new. https://codeberg.org/Freeyourgadget/Gadgetbridge

U can sell it and buy pinetime https://www.pine64.org/pinetime/

Or buying from aliexpress watches like TTGO T-Watch which are based on ESP32 and u can customize and create own programs and like OS for them using Arduino IDE where u will controll all ur code of execution https://alii.pub/6px7zl