On KDE, I’d recommend getting a KWin Script for tiling. Krohnkite is what people use currently.
It’s not as buttery smooth as dedicated tiling window managers and it can be a bit glitchy at times, but it is better than one might expect and significantly easier (and likely less glitchy) than trying to get bspwm to work in Plasma.
It looks like a guitar pick to me. 🙃