Betting on Computer games for real money. Good or bad idea?

I was thinking about this for quite a while and decided to try it in addition to banking deposits made of stairs (if you dont know what stairs system for banking deposits is feel free to ask me) in 3 different currencies: russian rouble (the most higher % rates comparing to other currencies make it very profitable), us dollar (low % rates but high stability) and euro (low % rates, expensive value). So I made like 3-4 bets on a few local competitive teams and won like x3 more money I've put into bets but damn, it was really a lottery. Its like you are watching the stream and praying and being very nervous "ffs go go go cmon, play better nubs!" So my conclussion I'd better bet on football and hockey and increase my cash balance by building deposit stairs up to 16 % per year. Thats what I call real income! Actually what is your opinioon?