Hello @tahmina257 ,
I have a few information that will help you.
Gig editing is not harmful. If your gig is not getting enough impressions like it should be it's preferable to edit your gig.
But don't make a lot of changes in the gig at once.
You have to update the gig little by little.
If you think your gig photos are not satisfactory then update it today, The next day update/change a tag and put that tag in the description. Rewrite a line in the description that will include that updated keyword.
You need to have patience and understand that the Fiverr algorithm is really complex.
So, update in a small portion at a time.
Also, try to put the updated data quickly. Make everything ready before clicking on the edit option.
I hope you will find this post beneficial.
Best regards,
Teresa