I bought this robot from Amazon.co : https://www.amazon.com/dp/B07QWJH77V?...
I consider this robot the best self balancing robot!

I have couple other robots that you can find here:    • Self Balancing Robot ZYC0049 from Ali...   that do not do everything it should!
My friend Hari Wiguna https://www.youtube.com/results?searc...
is trying to finish the sketch (code) for the robot, because it doesn't work with the phone APP. There is missing code inside the sample you can find in my video:    • Self Balancing Robot ZYC0049 from Ali...  

But this robot, if you do what the manual instructs you to do, will work right out of the box!
I hope you'll have as much fun as I did.