I wish Linux had Powertoys Fancy Zones
kde plasma has it enabled by default. just drag your windows using shift. also press super + t to enter the editing mode
Splits my Ultrawide into several customised sections that I can snap Windows to.
As I’m dragging a window I simultaneously right click and a bunch of zones appear that I can snap it to.
I have an Ultrawide and a portrait 1440p that are split vertically and horizontally respectively.