People will advice you to go for different different coins for investment and that will make you more confuse. So i dont want to mention any coin except bitcoin and Ethereum. You need to find out yourself that which coins would be perfect for you. Go coinmarketcap or coingecko. Make an analysis, which coins doing well since launch and think, if they are in demand in future or not. And most of the time, choosing decentralised altcoins Over centralized altcoins, will be more fair.
bitcoin and etherum be best investment assets in cryptocurrency market at this moment although its price have high volatility.alot people shilling their coins if met someone ask about good coin , meanwhile didnt explain about its fundamental that attract demand. coinmarketcap could be good place to us researching coins, alot usefull data provided in this site especially about price and supply.