Thats all because they didn't do good research, but Luna fall was pretty obv after bear market, but surely sometimes even after good research you can lose, just because you are not lucky enough and project isn't hyped well
that is correct.
And also as OP asked - teach me to invest in NFTs. I think only in school and college only teachers teach when you are out in professional world you are a self taught student - the more effort you put in - the more better the results are.
He is asking for something to learn about NFT and not literally asking for complete knowledge , and do you understand what is the meaning of this Forum? and that is sharing ideas and knowledge .
those are the things we should know as the crypto section is for all mate, never to lure people for wrong doing instead they need to buy in what they believe can bring them income in the future .