1. You have mistakes in English spelling or grammar. Hire an editor on Fiverr

Top gigs usually have clean English. I’ve seen Fiverr gigs in the writing category that have terrible grammar…and no sales. No wonder!
2. Your gig doesn’t make sense. There is a saying: “A confused mind always says no.” When it comes to gig descriptions, people are blind to their own effectiveness. You must get feedback. Work with a few friends or colleagues. Ask them to act as if they were buyers and search for your gig. Ask them why they would/wouldn’t buy it, compared to other gigs they see.
3. You’re not promoting your gigs outside of Fiverr. This is a huge mistake most Fiverr sellers make. More interest = better ranking. And more interest = a better chance of making a sale. If you promote, you get found. Promote your gigs in social media and through direct marketing.
4. You’re not getting enough sales. That sounds circular, but the more sales you get, the better you rank in Fiverr search. Get several of your friends to buy your gigs, even if you have to pay them to do it. A higher number of sales in a shorter period of time helps you rank better.
5. Nobody wants your gig. You can also have a gig in a dud category that no one wants to buy. Make sure you’re selling a gig that people want. Researching your gigs is EXTREMELY important. Even if you’re the best logo designer on the planet, you will have trouble getting sales on Fiverr if you don’t promote yourself. The more competition in a category, the more you need to promote.
6. You’re not cross-promoting your gigs within Fiverr. Cross promote in three ways: 1) Link to your related gigs in your gig descriptions. 2) Have multiple gigs related to the same type of service, such as: whiteboard videos for real estate, whiteboard explainer videos, whiteboard animations, whiteboard animation for services. 3) Link to your other gigs in your feedback comments, like this: “I’m glad you liked your logo design. A custom header for your newsletter would go well with that logo. Check out my header gig.”
7. Your gig ad sucks, starting with the thumbnail. The thumbnail is like the cover of a book…and most people decide if they want to read the book based only on the cover. Is your thumbnail compelling? Do you have a video? Do you have good samples? Will people be compelled to click on your gig, based just on seeing the ad? Get feedback from someone who’s shopping for gigs like yours.