gallery with captions - ☔︎ ∙ I need Help!

hello fellow gallery makers!

i'm currently stuck with my gallery CSS, and i'm kinda okay with it, but i would really like to make a captions for each image.

i created thid kind of CSS for my meme board gallery, annnd... it looks fine, i guess? but i would really like to create optimized version for my main art gallery.

i've heard of <figure> tag, but it's hard for me to implement in into my grid CSS for gallery (don't worry, it's SFW) without loosing a responsiveness. also yeah, it's required hover action to see the whole art, and i can keep it or change it if needed.

do you think it's possible to somehow change <img> tag to <figure> tag to save it? or should i change the whole CSS and make it from scratch?

do you, perhaps, have any examples of such galleries (or maybe even yours)? i wouldn't blatantly steal the code, of course, but i would want to see how it works.