If you think experience is the most important thing, then I'll justify it, but let's see and observe that there are many gamblers who have been gambling for a long time, of course they already have a lot of experience, but they just play without wanting to do research or research before playing, there are also experienced gamblers who still following or always using other people's predictions to bet so experience is not the main factor for someone to become a reliable gambler.
Lots of grown-up gamblers I've seen just rely on luck or their feelings without actually researching first! Listen, listen: you can only get so lucky in the casino! If you wanna be a super cool pro gambler, you gotta take a deep look at your own and other players' moves and figure out a super duper plan to win against them!