I understand, and also want to invest mainly in ICOs, as they yield higher incomes, also, it feels much better if an ICO succeeds, what you have backed for a long time.

If you want to find a good ICO, try searcing on Icobench, evaluating projects, and so on.
Finding an experienced ICO reviewer might help, such as Charles form CoinBloq.

Do your research on the projects, on their plan, team, whitepaper etc. and then decide if it's worth the investment.