My question is can I use a mirror for making matchmaking games like PUBG ? or i use other framework
Yes, you can use it as I have made some changes in the Pubg Mobile game. I added many new features to the game by using the mirror. It is very flexible and effective to edit and add new features to the existing open-source game. I would suggest you use a mirror. And one more thing I want to add that is you can also make a better UI/UX with mirror.