These references will explain in detail how to avoid scams:

What is the most common cryptocurrency scam and how to avoid it — https://hackernoon.com/what-is-the-most-common-cryptocurrency-scam-and-how-to-avoid-it-4112588afa61

How to spot and avoid a Bitcoin scam — https://www.finder.com/uk/bitcoin-scams

Common Cryptocurrency scams — https://commodity.com/cryptocurrency/avoid-scams/

7 Most Common Types Of Cryptocurrency Scams & Tips to Avoid Them — https://coinsutra.com/cryptocurrency-scams/

Thai Police Arrest Suspect in $24 Million Bitcoin Scam — https://cointelegraph.com/news/thai-police-arrest-suspect-in-24-million-bitcoin-scam