One of the biggest indicators of a fake Bitcoin is if you find it listed “for sale.” Swindlers will often advertise something like “Bitcoin for sale, grab yours for 10% off!” on any platform possible. Then, they'll lead you to a fake exchange and convince you to buy however much you can afford.  When you “buy Bitcoin” on a fake website like this, your money will go directly into the scammers' pockets, and you'll likely never see it again.