What sleeve did you buy?
https://smile.amazon.com/gp/product/B01M4SDGPO
The little cord at the bottom quickly allows me to tell which end is "up". And the silicone at the edges of the touchpad prevent almost all accidental touches.
This seems like the same thing: https://smile.amazon.com/FineGood-Protective-Generation-Skid...
But add a little silicon sleeve that solves both issues, and it quickly became my favorite.