you can use exchange services, if your region is blocked, just use vpn
As far as I know, the banned countries are Iran, Myanmar, Belarus, and Romania. Tunisia is not in that list, in addition to being far from being banned because of the nature of Tunisia's tourism and regulating laws.
Some user claimed they are forced to do KYC verification. Its kind of sucks when you are protecting your privacy and anonymity and then the next day you open Binance now you are required to do some verification or its banned from your countries. After all, that is what centralized exchanges do, it always has some strict regulation because it needs to comply with the law.