How can I import the 3D models and particle effects from League?

I've been trying to get League of Legends models fresh from the game so I can use them in Source Filmmaker.

And before you start commenting unhelpful things like the one's I've seen on other posts, I have googled how to do so and, because Riot games killed Wooxy, all the tutorials I could find are now irrelevant and outdated. Also, I am fully aware that some League of Legends models exist on the Steam Community workshop but they don't have all of them and I'd like to get my hands on the maps as well. I have even looked up for the existing models online but lolking only lets you view the models (and not even the maps and particle effects) and Sketchfab doesn't have what I'm looking for.

If anyone could actually help, that would be a godsend.