Advice about binance P2P and banks

Hello, I am doing p2p in some centralized platforms (Binance), I lately started to move excessive volumes akin to 60Okay USD each 2-3 days. The started to ask where the cash is coming from, I have no replied since banks in my nation will not be crypto pleasant, some suppliers of crypto that I have, (additionally they do p2p) started telling me "You have to create a business account and start justify the transactions of selling/buying crypto by creating invoices for providers", my query is, will this no carry a legal difficulty? I mean i know shouldn't be illegal mendacity to a financial institution, but when they do some sort of due diligence that may give me some troubles in the future?