Nice one, for me I personally earn cryptocurrency through air drop and bounty
It's still working on this era? I don't think that it's still good to get into airdrops. Yes, they are free monies but I don't think they are reliable up to this date. And as for those bounties, a few of them are good and it's welcoming to see people like you that are still earning from these sources.
Also we can get passive earning when hold some coins.
This is correct but there's risk on it and value varies depending on the price of the coin you hold.