How to download Pages for macOS Ventura 13.7.8?

If you did not satisfy the first paragraph of my last post, then your only option now, if it must be Pages with Ventura, is to sign into iCloud and use Pages for iCloud.

Pages User Guide for iCloud - Apple Support

If you ever installed Pages from the Mac App Store since Fall 2013, then you can get a compatible version for Ventura. If the first sentence is false, then you cannot get Pages now, and your only other option is Pages for iCloud, or perhaps with iPadOS 26, you can install Pages v15.3.1 on it.

If the first paragraph is true, then launch the Mac App Store and sign in to it using the identical Apple ID that you used to install Pages previously. Press cmd+0 (zero) to open the Purchases panel, and you should see Pages there with a blue cloud download icon. Click that and you will receive one or more dialogs. Do not click Cancel and the last dialog will ask you if you want to install the last compatible version of Pages for macOS Ventura. Yes you do.

It doesn't seem your OS is supported anymore for the app. but there is a website version that will work as long as you have internet! https://www.icloud.com/pages/

I have not tried this but it is one possible method to get the post-2013 versions of the iWork apps. First, you need access to a computer running macOS Sequoia or Tahoe (as of this date). Perhaps a friend will let you do this. Then you need to sign into the Mac App Store with your Apple ID & "purchase" the apps. Yes, they are free unless you subscribe to the creator studio, but the process to acquire them & get them associated with your Apple ID is considered a purchase. You will then need to sign out of the Mac App Store on that Mac (unless it's yours) & delete the apps. Then sign into the Mac App Store on your older Mac & it *might* allow you to download them as I described in my previous reply. 

I have not been able to test this method so it is just a theory but someone posted in the Numbers forum that it does, indeed, work.

I've tried doing that personally, I had no luck as I have a 2012 MacBook Air with Ventura and I had no luck with using a Modern Mac, so i don't think you can