How to improve my gig ranks in fiverr?

[rustam_nebir]

My name is Rustam from Bangladesh, ones upon a time my gig was first page by the keyword background removal but day by day gig is derank, can you please suggest me how can I rank my gigs again?
My gigs are here:
https://www.fiverr.com/rustam_nebir/do-100-photos-background-removal-quickly
https://www.fiverr.com/rustam_nebir/create-perfect-ghost-mannequin-or-neck-joint-effect-5-images
https://www.fiverr.com/rustam_nebir/deep-etch-cut-out-background-100-images
Thanks in advance!

Thank you!
Rustam
Level 2 Seller