Hello 👋 how can I buy coins from a exchange without submitting my national Identity card or BVN number? As for those who did this how safe is it? I don't have anything against verification but I am not sure its safe or am I wrong about its safety?.
You are not wrong. While the fiat world asks for KYC, most centralized exchanges ask for that "just in case" and to be compliant (just in case), and yes, nothing stops them from selling that data.
There's a topic where this is widely discussed:
Why KYC is extremely dangerous – and uselessAnd from there's a link to a topic about P2P exchanges you may want to use so you don't have to fill KYC:
List of P2P/no-KYC exchanges