As far as I know, there are many options for us to find a good and potential altcoin.
One of these is Coinmarketcap(CMC), Cryptomarket, Coingecko, and More. We can also use news update
platform about in cryptocurrency.
Yes, you can find potential altcoin from that. I guess that bitcoin and ethereum are becoming a new trend right now because both bitcoin and ethereum can increase so high. But we have the other altcoin, which will potentially increase later, so we need to analyze one by one to find that hidden gem. You can find the potential altcoins from news updates, but we don't know if they give the right information.