The best portfolio consist of balanced instruments, so you should invest in both the bitcoin and gold. It can be act as hedging instruments for each other. In the crises like Covid19, the world's economy was on fire which makes gold strong in price. so both gold and bitcoin is important in the balanced portfolio for better returns and risk coverage.
balance is good, but not if you want maximum profit. bitcoin here has a high fluctuation, and it depends on the timing when you buy. if you managed to buy bitcoin when the price dips, I'm sure you are the winner at this time. and for gold, investments that have proven to be good and also profitable because of their stable value. gold is better if used as a deposit or long-term investment