I have seen tipsters that are consistently profitable.
Most experts who claim that they know the game inside out and have certainty in the result of each game is lying to you. Most profitable tipsters that I've come across do not proclaim this, but rather place bets on +EV propositions that over time accumulate to a profit of many betting units.
That said, don't go out there and blindly pay for a tipping service. Make sure that they have a verifiable edge and track record first.
I gamble a lot but when it comes to people who show off their wins I don't usually believe them because their wins don't look real to me even as much as I gamble I still lose but just that as a gambler I don't want to give up despite the losing but them they will keep showing slips of wins and am sure that most of those things are edited slips just to get people to there channels. and if you gamble well you will know that the majority of those guys are fraudsters nothing they will tell me. because how will someone be constantly winning every time a game is played? it is not possible no matter how good you are while you are predicting. and that is how a lot of people are deceived into even paying people to get predictions, so for does of us who gamble a lot we need to be smart. I know how desperate people are because they want to win, understanding the nature of what you going to do should be the first thing you think about so that you don't complain.
You don't because that was not the real experience you have. Indeed, some gamblers are used to manipulating others and think that gambling makes them rich by showing a lot of money which is not their real winnings. We've seen this on YouTube, even not a gambler showing this to the public, and innocent people got into it. If we analyze carefully, if these experts say that their prediction is right and working, they are not multibillionaires but they are not. If that is true, we were never supposed to see them live in order to hide their identity and for security reasons but they did.
In my opinion, if there really are people who are experts in predicting gambling so that their predictions are always correct and produce profits, of course they must have generated a lot of assets and there is also a small chance that they will share their prediction strategy, even if they publish it, I don't think they will provide it with it's free, just like with streamers who gamble, giving this or that strategy with the result of getting profitable wins, and many people follow it, I think if they follow it the results will not be the same, because in my opinion gambling is based on luck, even though there is gambling that requires skill to play, in my opinion it only increases the chance of winning, but with the result of winning or losing it is luck that will determine it.
with streamers who provide strategies or something like that to make a win at gambling, they are smart people, because they can take advantage of things that are currently busy so that even with lots of people watching it will generate profits, and I think people who follow their strategies are people who quite stupid, because they don't see the side of luck. and as you said, they should hide their identity for security reasons instead of publicizing it.