When I see such questions, I usually dont give suggestions, but rather tell what is in my portfolio. Giving suggestions isnt good, because in case of failure, people will blame you for loosing money. One of altcoins I am currently holding is Matic. It is popular now, Matic is in trends. I saw how after market price drop, Matic was one of the first to recover price loss. And by the time others recover their prices and reaches ATH, Matic ( I hope) will get a lot.