This is an easy one to answer. If you search Fiverr for ‘logo design’ you will find 126,236 gigs offering the service.
It can help to spell it out. That’s one-hundred-and-twenty-six-thousand-two-hundred-and-thirty-five competitors to you.
By my reasoning, the world does not need 126,236 logos designed today, this week or even this month - probably not even this year. That’s why you’re not getting any orders.
You are in probably the most overpopulated gig sector on Fiverr.
As the hours pass by, and more people read this thread, you’re likely to see loads of really rubbish advice come your way such as ‘market on social media’ and ‘respond to buyer requests’ and ‘use all 7 gigs’, etc. It’s all nonsense. Quite simply the demand is not in place to meet the supply of gigs offering logo design.