Thank you everyone,
I do have the universal license. I'm just so used to using Adobe Illustrator, so Designer became my go to for most thing.
I spent all night and day thinking about this, and @Old Bruce just confirmed my own theory. Before I went to bed, I went ahead and group everything with a copy of the text that I turned into symbol, and the slices exported just fine. But if I wanted to redo all of the images with another software altogether, I will have to regroup everything. Then just now in the shower, I thought about using Publisher to do exactly what @Old Bruce said, so I guess I'll be using Publisher for now.
Perhaps they, @NathanCcan add an option to toggle a slice and have that slice be export/attach on top of every other non-toggled slices. If possible, I believe that will be the fastest way to accomplish my particular goal.
Incase anyone is wondering, I'm using stable diffusion to create lots of images, I'm trying to find the best way to publish them with an overlay text. So far, it's >100.
Thanks again,