I just had this exchange with my few years younger girlfriend who counts as a zoomer:
Me: So go into the Canon app and select from there the file you want to print
Her: ...
Me: (showing on the phone) So go there, and now just browse for the file.
Her: uhh...
Me: Where did you save the file?
Her: I don't know.
Me: Uh, so where is it?
Her: In the PDF app
She's really smart, she uses Linux, she laughs about some of her same age and younger friends not having a clue about files and folders and stuff but phone is where this happens hah