So here I have a friend who's inviting me here on the said gambling investment. It's just simple, you'll send your bitcoin (investment on any amount) on that person then he's going to play using the money collected. After 7 days, your investment will be doubled and the money will be sent back to you after deducting the trans fee. There is a chance of losing but if your money loses, you'll. Be given a 10% refund.
Someone already tried this? Safe or not??
For me is a scam too, if you want to gamble, do with yourself don't be intermediary of someone else. That is your money or your bitcoin, you should have a way to get profitt. Espesially in the world of cryptocurrency it will be very safe if all the ways to gain profit are done by yourself, certainly to avoid like a scam, ponzi and the other.