Alt tag SEO problem

Hello,
In the past 12 months we have redesigned our site with the DiviBuilder program within WordPress and have chosen to structure our custom jewelry pages as project pages to best utilize the organization and customization of metadata in order to better serve our site visitors and search engines. We've recently run into an issue that doesn't allow us to optimize our site best, we're hoping you can help address this problem.

We currently do not have the ability to customize or edit the alt tags on our gallery pages (i.e. https://abbysparks.com/custom-jewelry/engagement-rings/). The projects that appear in the gallery do have alt tags associated with the featured image but this is not getting passed through on the gallery page. Rather, we are seeing that the project name is getting used at the alt tag. We would like to have the ability to add and edit the alt tag for the images that link to our project pages. Within the DiviBuilder tool the only way to update these alt tags is to change the project name, which we don't want to do.

Is there the ability within the DiviBuilder to change the current alt tags on the gallery pages or can you assist us in changing the alt tags?

For example: on the custom engagement ring gallery page we have The Brooke ring which currently appears on the gallery page as alt=The Brooke.
We would like for this alt tag to reflect the description that we included upon uploading the image:
"The Brooke a custom platinum and diamond engagement ring made with a 3.0 carat diamond; 1.2 ctw diamonds; 0.89 ctw diamond melee custom made and designed by Abby Sparks Jewelry, Denver, Colorado."

Simply using the name of the ring doesn't help Google understand the contents of the image.

We appreciate any insight you can offer.
Thank you,
ASJ