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.
Most likely, the altcoins you invested in did not do proper research, or maybe you were just carried away by the hype and you just bought them and believed they would go to the moon, which is not the way to choose an investment, here in the crypto space.
You know for a fact these days that there are a lot of potential altcoins in the market if you just do the right thing in this field of cryptocurrency. Maybe at the time when you invested, the altcoins that were really potential were only passive, so there was little that could be said to be potential.