my recommendation for you is Chromia (CHR) because this altcoin has dropped from -92% ATH,
so it is very suitable for investment.
I think whenever investing you should always remember to never use your entire capital in one coin. Crypto currency market is very risky market where even good coins have crashed. Therefore, always divide your capital into different coins. Thus, even if one project fails, your entire capital will not be lost. Another important thing is that you should never invest your entire capital at one time. One should try to ensure their entry whenever the coin price falls.
In short, don't put all the eggs in one basket.
Having suggested spreading it in 2-3 different coins to have at least some assurance that whatever happens to the other project we still have money left and have the chance to recover our losses. But the best thing to do is to invest ONLY potential altcoins, not shitcoins, and those projects that are hyped as they do not pertain to long-term investment, they'll just stay short and have no assurance of ROI.