The most popular option for professional gamers are card games - poker is the most common field of activity. There are many different variations here: Texas Holdem has taken the lead in recent years. Professional players can specialize in one form, but many still master several variants. Blackjack and roulette have the disadvantage that the casino is not played against other players.
Professional gamers focus on games with skill and strategy. The simple assumption: if you are better than your direct opponent, you win and earn more money in the end - the other loses.
Another source of income for professional gamers is betting. Sports betting on results in football or horse racing can be very lucrative. A well thought-out betting and betting strategy is crucial. The high win rate may be tempting, but a professional gambler needs a balance between risk and security.