You go with what works for you; those who watch almost every match in each season, some of them don't waste time in running research about previous matches again as they watch both team performance before either last season or just in a concluded match; they can make their prediction from there.
Some people are just like your friend; even after spending hours and days making your research on your game option, sometimes your prediction comes out wrong, while the next player who just spent a few minutes selecting random matches ends up winning. It's just all about luck sometimes, but the research just helps increase your chance of winning.
That's the reality of prediction no amount of research that can usher you the exact result because this betting is purely a game of luck to felt that research can give accurate results there would have been more wining than losses because the past record or research made would have been given people wining because it would have been like mathematics where one plus one is equal two, I over see betting as luck even if experience can help but can't exceed 25% to which luck operate.
Gambling and betting are basically a game of chance where random patterns will always be the main factor in it, but even so we can still minimise losses by doing research and analysis before the bets we make so far, although it cannot guarantee a 100% win but at least our chances of winning can be greater by making more rational decisions in the bets we make than if we bet blindly and just depend luck, victory in betting and gambling cannot be separated from luck, but I think analysis and expertise are also very important factors because luck will not always cover us.
In fact, rather than gambling blindly relying on luck, gambling with proper research and analysis can reduce our potential risks and increase our chances of success. Success can never be achieved by relying entirely on luck, Or if luck is not on your side, you cannot win with skill or experience alone. Victory will only come from a combination of luck and experience, That means luck and experience are equally important to win.
Therefore, before gambling, you must do proper research and gamble responsibly. And you must have the mentality of accepting losses. Because when you learn to accept loss, Only then can you protect yourself from uncontrolled, Which will save you from big losses.
Making some research before gambling is good but we must know that it doesn't guarantee winning but it keeps you at a better percentage of winning your game, making research will give you the current performance of any team you will be betting upon their ability of winning a game or not but sometimes this things doesn't work that's why I first proclaim that making good research doesn't guarantee winning because we have severally seen where a team that is much inform keep on losing to teams that are struggling with relegation sometimes most times we lose money because of our research at the end the favorite team to win will end up losing sometimes with an unbelievable scoreline just as what Feyenoord did to Bayern Munich in the UEFA Champions league I don't think people will bet on Feyenoord to win because their research has shows that Bayern Munich will definitely win some persons may single it with huge amount of money and end up losing it that's why it is very important to gamble with the amount of money we can afford to lose since winning in gambling is never sure or certain.