c9 pro won't get the android 10. as its already gotten two major OS updates, if your your device lagging then perform the factory data reset or system wipe cache partition these things will make device run faster without lagging
As your C9 pro is a old phone we don't care even a bit about you and your ancient phone if it hangs go and hang it on the fan so it dies and for gaming lag we have the best advice for you don't play games or just suffer the lag
