According to Intel, it takes years of hard work and practice. But the real problem is that there is no guarantee that you can definitely become a pro gamer even though you play video games all day long for years.
However, you may be able to become a pro gamer slowly, but much more easily without having to play games all day long if you rather focus on growing your livestream and focus on easier tournaments to win. The benefit is that even though you fail to become a long-term pro gamer, there will be some profits left by winning small competitions.
Jotaku, Anime Game Gamer
I. Eternal Return - Korea Diamond Tier
II. Super Mecha Champions - NA Legendary Tier
III. Tokyo Ghoul: re Call to Exist - NA Top #2
IV. Strinova - Asia Gold Tier
V. Guilty Gear Strive - JP 8th Floor
VI. Onmyoji Arena - Asia Diamond Tier
VII. Fate/EXTELLA Link - NA Top #9
I. Eternal Return - Korea Diamond Tier
II. Super Mecha Champions - NA Legendary Tier
III. Tokyo Ghoul: re Call to Exist - NA Top #2
IV. Strinova - Asia Gold Tier
V. Guilty Gear Strive - JP 8th Floor
VI. Onmyoji Arena - Asia Diamond Tier
VII. Fate/EXTELLA Link - NA Top #9