I actually think that the more we pick, the more chances we can win. The only downside of doing this is that we can earn less profit. I'm thinking about the game of Roulette here as one of my example. It is when you bet on multiple numbers and other ways to place a bet (E.g. color red, odd/even, etc.).
That's not the case with the gambling that I know especially betting whether it's Basketball, Handball, Table tennis, Hockley or Football, selecting multiple games doesn't increase your chance of winning but it increase your odd of winning, more games you select the more big your odds become and when you stake small amount, you get a potential pay out. This is helping a lot because it's like a multiplier for other casino games but the disadvantage of this is when you lose a game, you lose everything.
But, the case is different in a parlay game when we play sports betting. It may lessen your chance to win there but the more return you are going to get once you predict all or a lot of correct matches. Setting up a budget for gambling is great but it does not mean that we won't be doing the strategy anymore. We still can, if we think we can benefit more with it.
I am not good at parlay betting, a lot of people lose money quickly with this parlay but if you are good at making picks, you can recover your money without doing much but it's just hard to get. However, the advantage of parlay over ordinary bets is that ones you win, you will b able to recover all your last 3 months bet, so you can only enjoy it if you are capable of winning in the future and you have a steady money to gamble when you want to play.