Want to Remove and Add new Images

Hello Team,

I have total 5500 Plus product in my site. Now i want to remove variation image and add new images for all product but in one product, product have 21 variation.

https://prnt.sc/10jkujm
https://prnt.sc/10jkupy

In above url two different lens type which have 9 color. on click same color dot showing same variation images
https://prnt.sc/10jkypo
https://prnt.sc/10jl4cx

Manually process taking lot’s of time and not get any plugin for update image’s for variation.

Thanks