It is not easy to make money in any job on the planet earth. Making money comes with a lot of sacrifices which might not be easy to make. Many are looking for an easy way and in the end, they end up in a mess. There is money in cryptocurrency but that does not mean that it will come so easy, many are so lazy to face that reality and that is why most of them choose to settle for some useless group with a trade signal promising 100% on their investment and am not surprised they got their hands burnt in the end. We must know that everything that looks easy might end up in a dead-end.
Projects promise 100% on investment because people want to believe it in it

Now many projects to attract investors and ask them to hold their tokens use staking system. The long time you stake money the more profit you get. But a good and stable project are not able to offer a very big profit, That is why many people prefer to participate in the projects that offer mor profit.
This is an article about different type of stalking how staking system is working and how it is possible to earn money on staking
https://medium.com/bonfiorg/introducing-bonfi-web-staking-7368467d18cc