Games are a great way to enjoy our free time so it can be used in the way that can benefits but the nature of games becomes more engaging and also the developers are trying to make the players to spend money which is wrong and I would not spend money to buy things in game.
Another perspective is, that esports is a growing sector and games can have contracts in millions so people has career in that field too but it is highly difficult so users should concentrate on something that has a high probability to get success.
Not only to entertain yourself in your free time, mobile games have now entered the esports category and even competed in the Olympics. Currently mobile gaming can be said to be an opportunity for the younger generation to make money, there are many tournaments such as Mobile Legend, PUBG and Fortnite which offer big prize money and there are also many sponsors who compete to become sponsors of pro players. Don't underestimate mobile games, who knows, you might be one of them who can get rich just from playing mobile games.