for my passive income .. i boost people on league of legends and then do sports betting .. while keeping half of that cash safe .. most of the time i get more and its enough for me ! 
sadly I don't trust on anything related to gambling and betting anymore. they made me lost enough in the past and now I'll never play any gambling related thing. I would suggest anyone to not do this as well. it may give profit in small run but the end always will be with lost .