There are no such kind of websites that can promise you higher profits in shot time. You should know that the Bitcoin is money and earning it or increasing it requires some skills. Those websites are up there to make fool out of innocent people. They are cheaters and scammers, and once if someone deposits funds to their sites, they will take it for themselves and will give different excuses.

They are masterminds who know how to manipulate people. Never ever trust any such kind of sites. It is better to learn about trading crypto rather than putting your hard earned money on such sites. Always spend your money on something that looks legit and has the possibility of giving you some good profits. Holding your Bitcoins is way more profitable than those sites. Just hold them and try to avoid those sites that give you false hope and steal your money. I hope this answer will enlighten you.