Now the amount of giveaway scammers has increased. Because now I see paid advertisements of such fake giveaway videos on Youtube, which surprised me a lot. How youtube allow them to run a scam giveaway video paid promotion? These channels can be hacked channels, there are a lot of subscribers to the channels. And since there are newbies in these channels who don't know about this scam yet, they have sent funds to scammers in the hope of doubling BTC. It is very sad that they lost their money in this way.
So how do we protect ourselves from these Youtube scammers?
(1) Educate our selves that there's no such thing as free
BTC(2) Youtube needs to do better with their process, on what videos are to be seen in their platform
And as crypto users we have responsibility to:
(1) Report fake videos right away so that Youtube will react
(2) Warn this community like the OP did
Those videos have been take down already.