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!!
Not old coins are good too as well,it might never get developed so investors lost interest on those coins.
And price of cryptos is irrelevant to its potential unless it got huge market cap value.
But its better to invest on old coins which has some data to make you analysis for investment plan rather than taking complete risk by investing into a new coin.