until now im just only know 2 way for earn crypto without invest and mining, the 2 way itself was through bounty and airdrop, but mostly program now neither bounty or airdrop was fake and scam.
there are lots of ways to get crypto without investment, indeed airdrop and bounty are also included but this is the best way now. in the past year we searched for crypto from the faucet which was very popular in his day or also typed a captcha we could spend hours in front of a computer screen