Simple avoid them. That could be the only solution. New projects are for them who have deep knowledge about them. Although that type of investor also get scam even after that much qualifications and knowledge. So newbies are much helpless and one step ahead of being scam from those professionals. So buy old coins which growth percentage is good since launched. Go to cmc or coingecko and pick your choice among top20/top30. Memecoins like doge, shiba are better to skip
The very simple first step on how to avoid being screwed over the net is at least search a lil bit about the project.
Because in today's internet, you can practically search for anything. So you can already get a lot of feedbacks or reviews on a certain topic.