I am sure that you have now enough knowledge because you experience losses due to your wrong decisions. If you want to make investment again, you should do the investment that is really fit on you for you to handle the risks easily.
Risks always remains constant by the time we invest in any project but of we find any of the good project than the profits could be multiplied by several times. Taking risk and than investing into any of the project is what needs a lot of research and deep knowledge about the field you go for. This thread got some interesting replies with good projects and i am going for one of them. 2017 was good for ICO's so any of the ICO before year 2017 can be trustworthy to invest into.