It is possible to make money through gaming. Maybe not so much in playing the game unless you're really good at it. But there are other ways this can earn you money.
Yes we can make money by playing there are multiple methods ill share you my personal experience
1 I play game called dota 2 its a very famous game in steam, they have there thing called items drop early years they used to drop items and skins after every game now as the players has increased they have reduced the dropping system the items which we get is worth some $ what we can do is sell our items to other players or there are many sites where we can trade our items for money this trick u can do in games liek cs go,fortnite,pubg,leage of legends etc.Also you can even sell your account if u have good ranking
2 In this method if ur a good player you can just signup your account on twitch and just share your gaming videos to the audience ,you can earn tons of money from that site,there are many professional players who play the game and do the commentary those videos they share it on twitch and people stream those game videos.most common games gta 5,dota2 ,lol,pubg etc do checkout there sites it will help you to earn good money
3 Another method is that you can check if there is any game testing or game debugging job near your locality.Well all you have to do in those jobs is just play new games find the bugs or any glitches in the game and you get paid for that.Salary is good so goodluck