Deducting round, 'clean' figures for expenses like $1,000 for cell phone, $2,000 for supplies, or $5,000 for travel will be flagged by IRS algorithms as likely fabricated.
"if you are trying to deduct let's say your cell phone if you write cell phone expense 1,000 supplies expense 2,000 travel expense 5,000 it becomes blatantly obvious that it's just made up"