I had invested one ICO previously, it failed although I didn't contribute a huge amount on it. A news yesterday made analysis on blockchain ICO projects, mentioning 92% of these ICO projects are failed.. Should I stop investing the others or any really potential ICO suggest?
You don't need to invest only in ICOs, you can use other alternatives. Yes, indeed you can buy coins during the ICO when the price is lower, but that is if you buy coins in the crypturrency exchange. This will be more reliable because the coins have been registered, and are listed as being recognized or not fraudulent projects.