Nobody is going to tell you the most perspective altcoins that are going to give you the best profit. Do not be lazy and make your own investigation to understand with which idea are you dealing with. Read the whitepaper and you are good to go.
indeed it would be good for us to do our own research on the coins that we will choose to become investment assets. see the growth in the type of coin we will choose, and do research on the team that is on the project. if indeed you are hesitant to choose on several types of potential coins, you can see the top 10 coins on the coinmarket to be considered before deciding to invest in several altcoins