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??