How do full-time forex traders in Dubai cash out crypto profits?

Can someone explain how professional forex traders in Dubai cash out large amounts of USDT into their UAE bank accounts? I’ve heard that banks may flag or question large crypto-related deposits. How do traders usually handle this? I mentioned USDT because many forex brokers allow deposits and withdrawals via crypto (USDT). Do they use regulated crypto exchanges, OTC desks, or another method to avoid banking issues?