This seems counterproductive and I am on the same page as you. You will find many solutions online that require you to change the layout of all the pages to modify one page. How do you change the Layout of just one page in Word
To know more about PC cooling check our dedicated post on How to Monitor CPU & GPU Temperature. Keeping the cursor on the icon will show it is called Page Setup.
In Word, you can change the way your document looks. Conclusion How to make only one-page landscape in Word easily