Currently on the coinmarketcap site only about 1590 projects compared to at times more than 1700 projects. They have left many projects without developers or scam projects. I personally invested in some of these projects and lost a lot of money like bitconect and centra. Do you trust the projects you are investing in and will keep them for a long time until they succeed or are they just looking for profit in the short term?
market conditions are not good, look all red. many projects cannot survive the red market conditions. and the other reason is because the project is not yet mature but the team insisted on launching the project and after that the project could not survive.