Macbook Pro 16 inch keyboard shortcuts

No "end" key and no "home" key. But there is the keyboard shortcut of "fn - left arrow/right arrow" to quickly navigate to start of page and bottom of page. However, I would like to customize the shortcut to just one key for each of those functions, such as the letter "o" for top of page and the letter "p" for bottom of page (or perhaps the option or command keys with the "o" and the "p" would be just as handy).

I have searched and cannot find a method to customize keyboard shortcuts in that manner, even though there are a lot of keyboard shortcuts. Have you seen a way to go a bit deeper and make such a customization?

Thank you for any help!