Brukken

I have downloaded tons of mods for special edition using nexus mod manager. They all seem to download fine. But I have noticed close to half will not install. Mod manager will tell me there was a problem with the install. And I think on top of that the mod attempting to load will leave loose files in my data folder even though the install failed. Sooooo that's been really bad for my games. Has anyone else run into this problwm?