There are some promising coins in the market, you can look at the top 50 coins on the market cap and then look at the coins that were not pumped yet or had crashed hard but the developer is still active.  But in terms of specifics, BNB even though CZ is somehow in a hot seat atm, is still promising. ETH had already skyrocketed so I think the next big thing on the next bull run is BNB.  You can also check MATIC, and ADA.  For a lesser popular altcoin, you can check UTRUST and Biswap.