usually some newbies just think some random project as the "next big thing" and call it a day, thats what make some scam project easily scam people more prominently newbies because they hesitant to ask question and even when they try to ask question they don't even know what they should ask and this is also where finding out knowledge about how altcoin works, what fundamental many altcoin present comes into play.
but honestly once we get the gist of how altcoin works in general, and also we've been dealing enough with so many altcoin even more so with thos high quality altcoin backed by some big company like coinbase for example we could know just at glance that some project are just pure shit, because we have that instinct to find the weak point of certain project when we are always investing in good altcoin and also finding technicality aspect of that coin, but for newbie, just see whether some project is overpromising.
If anyone new to this crypto world... So it is important to be careful and not get too excited by all the talk. Look into the people behind the project what they have done before and the project plan. See if there are any real world examples or partnerships that show the project is worth considering.
Check if there is behind the project the Luna owner or others who already have a scammer tag so you should be careful from these kind of projects.
Once you have a good understanding of how altcoins work and have experience dealing with various projects and have good research about them. So your mind automatically led you to the right way and this will tell you that this project is good or not. So always be careful while investing in a project.