Big Decrease in Fiverr ranking

Hello everyone! I really need some help with fiverr ranking. My gig was on first page first row and now it has fallen down to the end of second page. I have many good reviews, the only thing that is a bit low is on time delivery as i am around 83-85% . Is this the main reason i am constantly falling in ranking these 3-4 days? I don't have any sales and i want to fix that. Can someone help me with that or share any tips for ranking again. Thank you in advance!

Check those who are ranking above you. What do they have that is better than you? Delivery times? Or something else?

Find out and you have your answer.