I think this couldn't be the reason because I know many sellers have negative reviews even sellers overall rating less than me but their profiles are appearing in searches even on the first page. Negative feedback is a normal thing in every business not only in Fiverr. If I was performing badly then my profile factors like rating, and OCR should also be declined. Fiverr is allowed to keep a 4.2 rating, 90% OCR, RR and On-time Delivery, if my score badly then this score must be decreased but they are upto the mark.
My profile is not available in searches even on the last page. I agreed if my score declined then gigs at least should be reflected on the last page or anywhere.
Buyers are happy only when we do work free of cost.