I recently bought a Lenovo Watch 9, and I love its hardware, but I can't say the same about the software. The Lenovo Watch app didn't have the quality I expected: for example, nobody tells you that the search of the watch will always fail unless you have the GPS of your phone turned on.
After I solved this little problem I found the watch quite useful, but couldn't get over the absence of useful apps to get notifications, like Telegram, my favourite mobile messaging service. I decided to just mod the app to remove the chinese apps (arguably useless for anyone outside of China) and replaced it with the apps from which I need notifications the most.
These are the replacements I made:
I also fixed Skype notifications, which didn't work in the original application.
I hope this work will be useful to you too!