Binance is almost available everywhere until recently and IMO still the one that majority can access.
Always hated Binance but can't deny it's the most useful for newbies in most countries. Don't know about 9 out of 10 but it's the biggest exchange for a reason.
My country Philippines is one of the recent victim of restriction for using Binance service because they failed to acquire license even though they are bing notified for many years already.
But despite with this restriction, Binance is still the number 1 exchange in my country since the app is still not banned which users is now using instead of the website version.
I’m not sure why the OP keep using other exchange while ignoring the number one exchange in terms of trading volume and number of active traders.