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 should my friend if you want to earn money then invest in bitcoin . It is not risky as what you've think , try it and you will see the beautiful outcome of it.
Invest in ICOs too, just do your research and read a lot about the project until you're sure that it's worth your money. ICOs are getting better because it's getting harder for them to get the funding. In the end of course invest small amount and see where it goes if you don't want to risk much. I do it all the time.