help idk why but recently my pixel world keep showing that i am lag in terms of ping,tried vpn,reinstallation,still cant fix,i want to mine 
I think this is some sort of internet problems or anything
Try using another internet.
You can try and reset your router. That always seems to work. Give it a try, if it does work I suggest you looking into that with your internet provider.
Firstly search in google: “speed test”