Yes, I recommend my friends to invest only in the top 100 altcoins. Better if they invest 70 % just in Bitcoin. Newbies should first learn a lot about the cryptocurrency market before investing in new projects.
Not top altcoins are safe. Even some scam & shit altcoins already in top 100. Few days ago SushiSwap CEO scammed & Sushiswap is now 60 no position. Better to invest wisely not invest by coins rank.