If you want to earn passive income then you must buy some tokens with some money and start staking them. If you keep stalking then from there they will pay you some amount daily and with that you can earn good amount daily. But you have to keep in mind that if you are staking on any exchange which is not trusted then you can not lose money and try to staking on trusted exchange. But I think if you invest in Bitcoin for a long period of time it will give you a better profit in future as compared to passive income. So I suggest you leave all the worries and invest in Bitcoin and hold it will be good for you.