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...
Entertainment mindset is more like it's ok if bet is lost and I personally never have felt like putting 'work' into bets, as long you are regular watcher of sports you bet on, you figure out things just by watching, these days broadcasters literally take care of every stat for you.