A good strategy is to buy when it's cheap and sell when it's expensive...It sounds so simple but why but why are 80% of investors in the red?
I'm not sure where you get that number 80%. Well, it can't deny that many investors have suffered losses and that is certainly because they don't know what they are doing, invested and fall into the wrong project/s, and due to uncontrollable emotions.
You can't simply think that investing in crypto, in any coins gives you assurance. A lot of scam projects and shitcoins flooded the market, and if you are too careless and lazy enough, not to wonder why you will lose.