Why bnb is centralized? Because, it is owned by CZ or binance? But, what about eth? I have heard more talks that eth is a centralized coin more than bnb but if you don't like centralized coins, you better stay away with this two and go for the real decentralized coin which is bitcoin.

The current coin that can be close to eth is bnb not because they are both centralized but because they have similar features which they can produced tokens under their network. The only advantage of bnb is that is gas fees can cost lesser compare to eth right now. Other than this two, we also have sol, matic, avax and others. They too have potential like eth but they are not strong as bnb imo.