newbie often run into losses when investing in new projects. ,i once bought new coins but i can't resell them. i think i have been cheated

what can you suggest to us and how to find out if the project is a scam? Is it true that new Coins can give big profits as people say on youtube channel?
First, the cryptocurrency market to experiencing market correction which will impact every coin we have in the market, and if want to invest in new projects, you need to understand the project team's enthusiasm because a project where the Dev is not the number one fan of what they do is good as died.
Second, went for a project that solves a problem or introduces an innovative concept that you know the crypto community will welcome with open arms. People like Elon Musk, Bill Gates, Jeff Bezos, etc are billionaires because they solve people's problems through their projects. There are also other activities you need to check in a new project before investing in it and if you don't have the knowledge it is better you go for a well-established coin that is doing well in the market.