You should expect your accounts to be suspended soon if you've transacted with Binance Nigeria and other exchanges or custodial service using your bank account before. I hope you will find other ways to convert your cryptocurrencies to fiat and vice versa. Are there enough merchants that you can deal with P2P?
The best option is to start a new bank account with a different bank than you usually use to link your cryptocurrency exchanges, there are several sites that allow you to trade using P2P to Nigerian naira including Binance and i would say that it is the best option rather than getting your accounts in trouble. Just create a freelancing profile and if there are questions asked just identify them as project revenue and always pay your taxes to avoid any other legal troubles.
If you follow these then they are not going to identify these transactions as cryptocurrency related, always look for trusted users with verified profiles before carrying the P2P deal to avoid illegal sources;).