Expand WHM/cpanel Disk space patition

i have a VPS With 100 GB data it runs on AlmaLinux 8 with CPANEL/WHM.

i have added 50 gb to my plan but now i need to expand this petition.

I do have an tutorial online but it still doe not work.

- WHAT NEEDS TO HAPPEN

- Expand the 100 gb petition to 150 gb.
-