With larger screens, tiling windows become an issue. While there are special tiling window managers, KDE/Plasma has built-in tiling:

• System Settings -> Workspace Behaviour -> Screen Edges: enable Tile: Windows dragged to left or right edge: now you can drag windows to left or right edge and it gets tiled horizontally by half of the screen. Depending on the percentage at Trigger quarter tiling in: it depends on whether you drag the window to the upper or lower percentage of the screen to have the window vertically tiled by half of the screen. If you rather drag the window to the left or right centre of the screen, then the window will be only horizontally tiled but get full screen height.
• System Settings -> Workspace Behaviour -> Screen Edges: enable Maximize: Windows dragged to the top edge: now you can drag windows to the top edge to maximize them.
• To get horizontal tiling into three parts, you can hold the shift key while moving a window.
• Unfortunately, there are no mouse gestures to tile a window vertically but have them horizontally full screen size. But there are keyboard combinations: super key (typically: the Windows key) and cursor keys tile the window by half of the screen size in the respective cursor key direction.