Show Thumbnail in Search NextGEN

I am working a blog for a furniture client and the web address is https://www.cdfurn.com. I am using the Oxygen theme. I am fairly new to using WordPress, I am used to much simpler coding so I need help. The topics out there are too confusing for me to understand. I already broke my site once and do not want to do the same thing again.

I displayed their furniture through NextGEN gallery (v. 2.0.66) with just thumbnail images that when clicked are shown larger in a lightbox. The images do not have their own page. I have several galleries of this.

I named each image under Description and have coded in model numbers and descriptive words and titles. I want the search feature to find these image thumbnails when model number or title is searched and display them with the photo and description I have written in the gallery. I found a plugin that can help but it’s very confusing to me. Please let me know if you can help and I can give you any code you need to see examples.

Here is how the search feature looks now when searching a model number:

https://cdfurn.com/?s=400521T

Thank you so much!!!