PUBG Mobile has been one of the most popular mobile games ever made by beating the concurrent player's record of Clash of Clans, Clash Royale, etc. Call of Duty Mobile was also released in 2019 to compete side by side with PUBG but it failed badly. PUBG Mobile still has more concurrent players than Call of Duty Mobile.
So, Where do most PUBG Mobile players come from? The answer is simple and we're gonna tell you the list in chronological order.
According to 2017 data, Dota 2 was the most played game and by 2019, PUBG mobile surpassed Dota 2. China was the country with the most number of players playing PUBG mobile followed by India, USA, Japan and Russia but after the ban on the game by China, players reduced in a major way and India has taken over the number 1 spot. This list goes in this way:-

1) India
2) China
3) USA
4) Japan
5) South Korea
6) Russia 

However, a conclusive stats also includes both PC and Mobile players. According to the data from a sports portal, China ranks at first with 24% of players, India with 19% of players and the USA with 12%.

By the way, Do you play PUBG Mobile and if yes also tell us where are you from. Happy Gaming :)