If you want 100% profit better for you to buy Bitcoin because the rise value of bitcoin is can't be stop, I really do believed before end of this year it will reach 20k$ each. And look at the price now at the coinmarketcap which is 11,977$ each or if you like altcoins Cardano or Ethereum.
100% profit if you suggested OP to buy bitcoin means bitcoin price should be at least $23800 until OP get 100% profit. If bitcoin only reached $20k, it's mean only 65% profit for OP
That's not what he meant tho. He said that if you want a "guaranteed" (100%) profit then you should go with Bitcoin not 100% amount of profit. Read carefully dude.
For a safe option, buy bitcoin because the price continues to increase, but I think bitcoin has reached a high point so it won't give a big return.
It's not I think, it's still going up slowly but sure will give you something worth your patience.