There are gamblers who have great instincts and can forecast games that may end up winning the bet. But they are scared that they may lose. They dont trust their own betting predictions so they would rather go to a gambling prediction site to some daily betting tips.
If they doubt their predictions then they didn't have a good instincts in the first place, that's how I see it, they're most likely lucky at their picks that they've got doubts. If you do have a great instinct, most of the time you follow up on it and no doubts will be on your mind whenever you do it, that's how I see it. Regarding using prediction websites to place your bets, that's not how you use those sites, they're there so they can help you decide and consider all of the factors that are present in the match that you might've missed out when you did your own analysis, don't be dependent on such thing when betting, trust your analysis and do it yourself, don't make it a habit to win because you're dependent on something.