I've been trying to read the Goblin Slayer manga, but like most action-heavy manga, I find the action sequences to be too hard to follow because of the stylization. It's just pretty much standard, to me, for manga artists to never convey action in a way that my brain interprets anything other than wiggly smudges.
I mean SOME of it is ok. I'm fine with the action sequences in Dungeon Meshi, for example. And I find most Manhwa easier because of their overemphasis on whitespace instead of shitty "action shading." But so very much manga is just awful when it comes to depicting action. It's like the manga-ka is trying to convey the speed and force by literally drawing/inking faster and more wildly, and it just ends up looking like twisty scribbles to me.