I have saved some space on my desktop by getting a keyboard without numeral pad. These keyboards are called tenkeyless or tkl. The tkl keyboard allows me to keep the mouse better aligned to my body.
I first tried a 75% keyboard but it was too much of a change and I found I used the navigational keys and direction keys more than I was aware off before.
If you find that you sometimes do need the numeral pad, then you can buy a separate numeral pad and position it how you like next to your tkl or other sized keyboard. For instance if you are left handed you might like to position the numeral pad on the left hand side of your keyboard.
An nice explanation on different aspects of keyboards can be found here: https://arstechnica.com/gadgets/2022/03/the-ars-technica-guide-to-mechanical-keyboards/