Hi Everyone,
i know this is very common that fiverr deranked gigs and you will find it on last pages of the search. on my research which i did and all the three times my gigs ranked again to first page but sometimes it go back to last pages, however it worked. below are some tips that i tried.
1) take orders from Fiverr select Buyer and in the order convince your buyer to buy something extras while the order is open. adding extras to order really help in ranking.
2) try to get orders double the price of your average selling price.
3) repeated buyer is a key and increase your repeat buyer score above 95 to rank it again.
4) a long detailed review by buyer really helps in ranking as according to what i research, fiverr note down the review length along with stars as most long review is shown on top as relavent review.
these are some tips i tried everytime which helped me in re ranking my gigs back to original position.