One problem can't solve from first, if new investor can't trust new fresh coin why they don't invest in old coin. We several good coin already exists in cryptocurrency even with very low price. Even I don't think there could be a trust problem. All solution is now is the correction time!!
Surely if there are many investors who hesitate to choose a new project because of the many cases of scams and projects that have no solid foundation. I do not know, maybe many people who use this hysteria to get money by making careless projects.
Experienced investors would have taken part in old coins, the risk is smaller. It's just that the market situation is indeed saturated, so there isn't much action that can be done other than wait and see.