If you really want to earn bitcoin find high paid job with regular salary. On earned money you can buy bitcoin and other digital assets.
If you want to earn it only by playing games, you can find the popular one and became the best in it! Earn internal money, goods and then sell them with bitcoin.
Lol, this one sounds like a RMT (Real Money Trade) which is prohibited by game publishers.
Is it possible to earn bitcoins from playing games?
Today
There are no possible
legit solutions for you to earn while playing games.
Or playing "games" like in stake.com may let you earn some satoshi.