After a while here in the forum I read a lot of members worrying about there crypto investment/trade. I would rather choose a stable and highly trustworthy altcoins to invest for the long time rather than chasing those coins thru trading. I find it super stressful to read those people losing large amount of their hard earn money.
Firstly, I think you can reduce your investment amount to reduce the stress. Also, I think all of these currencies have really fluctuate prices, so, it is really hard to find a coin which has no risk.
There is no coin that you can find in Coinmarketcap or anywhere else on the Internet that will be a no risk trade. You have to accept that fact.