As an investor, i did a lots of invest in altcoins. Those were suppose to be good that time with having good hype, good team and community. But with having all of thats, most of altcoins scam after a time! I wonder for some altcoins, they were suppose not to be go but they scammed without any reason! And hundreds of altcoins are in my wallet, which are turn into dead shitcoin now.
As an already experienced investor, you should know the risks.
Maybe some of your hold altcoins performed well during their hype or actively developed during that time. But as time progressed, and we know that the crypto-market experienced several hits, most projects were unable to keep up and decided to stop the development and ended up abandoning the project.
We can't really determine if these projects will continue and keep up with their development once they are announced to the community. Rather than risk your money in these new projects, as it turned out it didn't go well, maybe try to focus on investing in coins that have been in the market for a long and already established a good community.
Not saying you should stop investing at new projects but at least, you will minimize being scammed if you test the waters at already established coins.