I think we all know by now that people love things like “cashback bonus” and “free spins”. Players immediately associate them with winning more money without investing money of their own. Cashback bonuses, for example, different from the regular bonuses because they are  risk-free. If you have such a bonus, do not forget to use it for that exact reason. People tend to see them as free money, but do not forget – you had to lose to get them, so they are not truly free, and it is best to use them as quickly as possible. Various casinos offer such cashback bonuses, the important thing is to pick the right one.
In my opinion, it is best to always use the most reputable and reliable ones.