Here’s my gigs:
No one knows the exact algorithm that Fiverr uses to rank gigs. However, from the little I understand, your gig’s rank has a lot to do with your performance as reflected by your performance stats (order completion %, on-time delivery %, response rate, and your overall rating).
I don’t think your gig’s rank has anything to do with the number of gigs your have, the # of impressions/clicks/views your gigs have, or the number of reviews your gigs have (if that were the case, I wouldn’t be able to find a gig that has 1000+ views on the last page, which is not really the case).
Thanks for your message.