To be honest, applying skills on gambling has an hedge to profer winning even though winning is about being lucky.

Atleast that confident you find with your skills and your ability to keep team performance records in the proceeding of your predictions of in sport bets like the football do have significant potentials to bring you winning.

But inexperience gamblers who only picks their teams on randoms without skillful minds are mostly gamblers who leans their winnings on lucks.
And when we talk about long term success, I also think skills or awareness of abiding to your gambling plans helps in the long while if only the success have to be of the long term.