There's no such thing as a completely reliable prediction site, as it's still our job to analyze the game before we place a bet. Without analyzing, we're just relying on luck, and that makes it less challenging. OP could improve his skills but should not rely on predictions. Instead, he should focus on gathering necessary information and learning from experience. There's no overnight success in sports betting; in fact, it's one of the hardest forms of gambling to master, but success is possible with dedication and effort.
And to be honest, we're not specialized in the field just because we're gambling every now and then. I've had my fair share of luck in a few games during the Euro 2024 Championship through prediction websites, but that doesn't make them reliable, nor can we ourselves be anywhere close to reliable. Predictions are usually hit-or-miss. Sports, although we share knowledge and strategies, can easily change at the last minute, something to which I'm confident we can all relate.