A coin dumping immediately after listing isn't necessarily a bad sign, some coins can remain undervalued for a long period of time before eventually reaching for higher prices in the charts. What is important is that the project team keep working on their product even if the price dumps in the chart
There is often a decline at the beginning of the listing, this is normal, let's just say that the initial investor is taking profit. if the project is really good, useful, and potential in the future, I think the price will be able to recover soon. investors and traders will undoubtedly take advantage of the decline for accumulation. remember that the economic principle always applies, if the demand is more than the supply, the price will increase.