Bonus manipulation will always occur, be it at a new casino or an old casino but the casino will know about it and will immediately block it because it is definitely against the TOS in the casino. And yes, it is always careful to check the casino that we can do to avoid being scammed. And as for the wagering requirements, we should always check beforehand so we're not surprised that the wagering requirements are too high and we can't afford to meet them. High wagering requirements often end up costing us money so we don't even have to try it.
Casinos can always work well to suppress bonus manipulation figures and even casinos will give strict sanctions to be banned or even freeze all balances that are owned so we don't do things like that to avoid any problems.
Usually some betting requirements for withdrawal are only owned by a few casinos and not all casinos provide these requirements only to withdraw a certain amount of money except for the proceeds from the bonus that the casino gives.
Moreover, in the FAQ we can read whatever we want to know so we can avoid things that we find burdensome and difficult.