Without any more thinking the choice is bitcoin. Just think of the growth with gold and bitcoin. There is a big difference. This year bitcoin and gold are the only investment that had grown positive while economies of the countries went negative. If one has invested on bitcoin by its all time low value of 2020 now the user could've got 3X profit which isn't possible with gold.
If you are ready to take the risk, bitcoin is more aggressive to pumped high, with so many adoptions that happening currently. The chance that value
will go for more, keep in mind that risk are high but if you manage to position yourself in the right time the profits will be sweet, while with gold and
stability there's passive as well but it won't be as high as what bitcoin can bring.