Best printing software?

I’ve been scouring the web, but I can’t find a single program that handles a pretty straightforward task without making it complicated. What am I looking for here?
I need to print several images—each one a .jpg file—onto one single sheet of A4 paper. They aren't all exactly the same size, but they need to stay true to their original dimensions. I need a tool that automatically arranges them to fit as many of those original-sized images as possible on one page. This is for my kid's school projects—they have to cut out specific shapes, which is impossible if the printer scales everything up or down instead of keeping the exact size from the scan.

When I try using Windows 7, it just forces its own preset sizes on me and stretches everything out, which is useless.

In Adobe Lightroom, I can select multiple files from a folder to print, but it tries to put every single image on its own separate sheet. That’s just a massive waste of paper.

Ideally, I want to be able to go into File Explorer on my Computer, highlight all the photos in a folder, and have the software figure out how many of those original-sized images will fit on a single page.

Does anyone know a program that actually does this?

just try copy-pasting the images straight into Microsoft Word and printing them from there

Do you have any idea how much work it is to dump everything into Microsoft Word and then manually resize every single photo, especially if you're dealing with 100 images? The guy just wants something simple and fast. 😉

So, we're talking about a program that basically functions as a mind reader and an automated image generator all rolled into one? 😁