To answer your question,  cryptocurrency mining is real, but one has to use the right mining equipment for such to be successful. So on that note, I will like to ask just only two questions.
1. What mining equipment did you buy or used for your mining journey, or was it just a mere online mining? Because most are scams
2. Did you make any deligent research about it before investing or you just went into it just because of the review of a few?

This should be a lesson to you from today to never invest in what promises a reward too good to be true, as thats the first red-flag of a potential scam