I hear you, meditation was a serious b**ch for me to get good at. It took me months to even be able to “quiet my mind” for longer than 30 secs. (it went quicker after that)
The benefit in normal life is at least a little less “chatter brain” all around and slightly better focus. So it’s not a total waste and certainly not only beneficial for magick.
You don’t have to sit still when meditating, especially in the beginning that was impossible for me. Meditating while taking a walk (phone on silent and packed away, no earbuds) went better for me. Doing some repetitive action (like linework/ coloring drawings, sanding down wood, archery practice, even doing the dishes etc.) while meditating also helped me to at least know how the state I was looking for felt and how to get there.
I really like this video by Jason Louv:
Also this is a seriously valuable (free) course which includes just about everything you need to get into (black) magick.