Print Module: No way to actually copy the current layout to a new page

Dear Community,

I am trying to use the Print Module, to create multiple pages with the same layout, but put different images on saif pages. (sometimes the same images on 2 or 3 pages)

First I faced the issue, that there is no way to actually copy the current layout to a new page.
Whenever I make a new Page, I have to by hand draw the layout.
At least after spending hours of googling, youtubeing, etc. I still could not find a any way to do so.

After this I spend a lot of time creating 100 identical pages (with the same layout).
Eventually ended up editing the .lrtemplate file with Notepad++, and copying the 1 page 100 times, and changing page number.

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Now finally I have the 100 page identical layout template, that I want to use.
I started putting pictures into the locations I want them in, then noticed, that if I place 1 picture, I can only use the same picture in another palce with the same "crop".
Can't for exampel use left side of picture in one cell, then use right side of same picture in another cell.

So figured, I have to create virtual copies of the pictures to do so.

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After a while I noticed, that when I click on a picture in the ribbon (down below), it jumps to either the first page, or to a random page.
This makes it a huge pain to try to put images into the relevant Pages I want them to be on...

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After filling in 24 pages with pictures, now I face the issue, that I cannot advance to the next page with the arrows in the toolbar.

When trying to go to Page 25, it jumps back to Page 13.
(Displaying 13-18, then 19-24, then again 13-18)
NOTE: If I use the template EMPTY, I have no issues scrolling through the pages at all.

Even if I enter the page number to jump to 25, it jumps to 13, or does nothing.

So question is:
How in the hell can I:
a.) Copy the exact layout of a page to the next page?
b.) How can I stop pages jumping when I click on the pictures in the ribbon?!
c.) Eventually, how can i get to Page 25?

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Lightroom 12.2.1
Windows 11

Tried to attach the lrtemplate file, but it won't let me.
Can't really attach screenshots, as these can't be shown on screenshots.
And I realyl don't have an idea how to do Videos.

However I am able to reproduce the jumping around on a new "Saved Print", so I guess, after putting enough picture in, you guys can too.

Any suggestions are welcome.

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Why am I not using the Book Module?
As I do not want a Cover, and I could not find a way to get rid of the Cover at all.
Also I can't specify Page sizes, and at the end I only want these in JPEG, not printed.