Carb clean/ Idle issue Buddy 50

[rangermcfriendly]

hi all, this is my first post

I have a 2006 buddy 50 cc that was dormant for a year. I recently tried to ride it and was having issues with it staying running. It would start with no problems with the electric start but when I would open the throttle, it would die out. Eventually, it would no longer start. I assumed it was old gas so I filled up the tank the rest of the way with new gas, but it still wouldnt start.

I cleaned the carburetor and made sure the Jets were clear now it will start, but only with full throttle, and sounds like a lawnmower, blows white smoke, and dies when the throttle is released. The air filter is crumbling and needs replaced. Is this caused by the air filter or could this be something else? is it possible that I messed something up in the carburetor while cleaning it? Or does anyone know what could be happening?