Well, it all depends on how you view it and level of expertise also matters in all of these things. As for me, altcoin is safe for investment, just know the in and out of the project you are buying into their token/coin. You should ask yourself questions like: What problem(s) does this project solve? Is it potential at all?
You would only find answers to the related questions in the place of research. And that's how I personally found https://bluzelle.com
All the best!