Most people have an account on Binance because this is one of the exchanges that many users including me often trade by finding good prices on this exchange, so indeed for trading then choose Binance but never store for long.
But I now prefer to use local exchanges this makes it easier for us to find crypto to fiat, but to find trading then look for global exchanges like Binance.
not sure if OP has replied in the thread since the last time he logged in mid-May. but if he just search i think he can find his way to Binance. he sounds very old Bitcoin user since he mentioned the old exchanges that were also shut down for years.
he does have coinbase though, he must be a US citizen which means he already has an account with the biggest exchange there. old user from old exchanges, he probably hasn't submitted KYC to any of the exchanges which he should be choosing wisely like DEX.
It's not strange to just disappear, but I thought maybe he had found the best exchange he wanted so he never replied but let's face it Binance is better to be called the best exchange in terms of trading coins there.
So Coinbase is an exchange for US citizens? There is no global Coinbase as such? I haven't used Coinbase so far because it's a little bit complicated for me while there are easy ones without KYC like MEXC right now that are used to exchange coins to others.
DEX is a good suggestion but when using the Ethereum network it's a bit expensive.