and some of the people really made money from bonus as I have a friend that keeps seeking for freebies .
Only a small proportion of gamblers can succeed in making money from bonuses and the percentage of failure is greater because after all bonuses are something that casinos give to their users for free and it is impossible if all those who get bonuses can make good enough profits.
Casinos may provide bonuses with large amounts of profit, but only that can be owned by those gamblers who have always bet in large amounts so that with casinos giving bonuses they can always become loyal customers.
From here, if it's true that your friend is always looking for free stuff and can use it to become an advantage with money, then I say your friend is a lucky person because not everyone can have that luck.
indeed not many people can get lucky with the bonuses given by the casino. more of the gamblers will spend the bonus in addition to their depleted deposit.
I won't say all of them will lose with their bonuses, but more will lose with the bonuses they receive.
some new casinos give free bets to new users. the hope is that new users have a pleasant experience and make the game more interesting for them to finally make a deposit. neither casino gives a bonus then for them to withdraw straight away.
By continuing to play using bonuses, it's not luck that you get, but only defeats and losses, even just because you lose a little from the bonus that you get, a gambler can deposit even more money to fulfill their curiosity when playing and things like this make gamblers lose a lot in gambling.
So it's not a good thing to expect something big from a bonus.
Actually casinos give bonuses to new users not so that they have a pleasant experience but because giving bonuses can add more interest from new users to keep playing there until they really become loyal customers.
Casinos have lots of ways for this, so it's no wonder that new users always get bonuses or wins at the first start of their game.