This is exactly the kind of gaming behavior of a player who considers himself experienced, in my opinion, is wrong. To rely on someone else's opinion in those sports that you do not understand, this is a manifestation of an irresponsible attitude to your game. I do not think that truly experienced players place bets simply after reading or watching content on games that they do not understand from some third-party experts or forecasters. This somehow suppresses your own game and does not bring such pleasure. But this is how it is in my opinion. However, there may be another point of view, I admit it.
Well, you are right though but a lot of players who just consider the game as luck usually want to try out on different games with other people's prediction because they don't know where they are going to be lucky, that's why some people bet on so many games, even if it's not their favorite, they will stake on other people's prediction.
Some people too are very principled, sticks to one favorite game, make their own prediction and win often but that doesn't means they don't lose because they are betting on their favorite.
In fact no bet guarantees you to win, unexpected events are very common in sports.
There are many gamblers who bet based entirely on other people's research, i.e. bet entirely depending on luck and for that they have very little chance of winning.
There are also many gamblers who make bets based on their predictions and research, which takes them a step further in their chances of winning.
Because luck is of immense importance in sports betting, but experience and research are also required. Because betting by researching the team's past performance and current form has a higher chance of winning.
But the most important thing is to be responsible, see the high probability of a team winning, not to bet with more money than you can afford, because the result can come anything. Hence one should never gamble impulsively and risk management is very necessary.