When your mindset about gambling is just for entertainment, you can’t really expect to win.. just my observation. Because when I’m not serious about it, like when I treat it lightly especially in sports betting, I don’t study the games before placing bets. I usually end up losing more. I don’t lose big, but if you look at the record, it’s not profitable or even close to break-even.
Even when your mindset is only for entertainment I feel that is still necessary for one to make analysis before placing your bet, because gambling without making analysis/research means that you don't value your money. And yes, those that play for fun and entertainment don't always bother about wining except they're lucky to win. But that shouldn't stop you from not making analysis before betting.
And of course that's the result we get when we don't study the game before betting, we end up losing and losing. Though I don't gamble for profit making I gamble for fun, but for the fact that I'm gambling for fun does not mean that I won't make reach no" whether is fun or not I still feel that is necessary to study the games before betting.