I haven't had much experience with exchanges, everything is fine. However, the Vietnamese community has been involved in a number of scams involving exchanges: Vietnamese people set up an exchange by themselves, then promoted, attracted users with high benefits and then disappeared with all assets of users.
Currently, there is a project related to the exchange, Bithera, they offer stake coin packages with profits up to 100% per year

I think this will be a bad experience for Vietnamese people with crypto exchanges.