That keyboard is causing me pain just by looking at it 😅
Check/try wrist foam wrests - these exist both for keyboard, and for mouse
https://www.logitech.com/en-us/products/keyboards/mx-palm-rest.956-000001.html
Discussion
Personally these work well for me:
mini keyboards (no numpad) logitech mx keys mini
Near-vertical mouse (looks like you have one) Logitech mx vertical ergonomic mouse