Most people who are new to BTC or find a way to accumulate BTC this might help you out; few ways to make money from BTC:
*Daily trading
*BTC mining
*Investing
*Selling your items in exchange for BTC; i.e(receiving BTC as payment for work or items sold)
*Yield farming (De-fi)
*Airdrops (this helps allot but be aware of fake ones too before participating)
*BTC surveys
For me, I believe it is basically Daily trading and Investment which I believe you are referring to long-term buy and HODL for Bitcoin. I do a bit of trading regularly but maybe not daily and have made some good profits from that and have some assets I have invested on for the longer time HODl.
Do we really have Airdrops that come in Bitcoin?