Google is promoting two Wear OS apps on the Google Play Store, Telegram, and Uber. Why Google is doing this is unknown, and what's even worse is that they're promoting the apps as "Essential Watch Apps".
Trying to install the apps won't do anything whatsoever.
The other apps work however the Telegram and Uber app doesn't work. Essential would be that if you didn't have these apps your performance on your watch would be significantly less. Some apps that don't work won't even help the performance of your smartwatch whatsoever.
This could be just an honest mistake, or Google is planning a return of Telegram and Uber.