Because A20 and M10s are one and the same..And they just need to make few changes to the A20 update to make it work on M10s..And also M10s was supposed to receive it in May but they later postponed it to June..
For Samsung, try game launcher and play in Balanced+smooth.In that budget, I can recommmend Poco X2..If your max budget is 8k, go for Realme C3..If you can afford, Ipad mini 2019 is the best device for playing PUBG Mobile..It costs around 35k..
