Debut Theme, On Mobile, Once In A Collection, Thumbnails Are TINY on phone screen, can I enlarge?

Hello

I am new, still, in my setup phase, things are going okay. I find the database here VERY good. On my desktop, things are looking pretty good for my simple website. However, the site I am leaving behind, my product looks really big when customers scroll the screen. My artwork often has lots of tiny details, I know this image is just a flag, but this is a test item.

On Shopify, once you click onto an item, yes sure, it looks great, but a client scrolling down the catalog of 40 of these items, the thumbnails are going to be SO tiny.

And this may be a two-part deal. The text next to the photo may need to be shrunk in order to increase the image size (and I tested shortening the description, the image stays tiny). Though, the text may shrink automatically if the image enlarges some.

So, who has the magic answer for this one!

@Kinjaldavra I saw you tried to help someone with a similar question. This isn’t the front page of the collections, but once you click inside the collections to look around, but BEFORE you click on a single item to open it on a new tab.