Staking and Yield Farming
Worst and most risky way of making money with Bitcoin in IMO. If one can buy and HODL bitcoin, then what's the point of transfering your Bitcoin ownership to someone else to keep it for you in exchange for low profits?
The People who were staking LUNA and UST are the best to people to ask about this method

Some platforms even want one to buy tokenized BTC which is fake BTC.