A lot of alpha CC was broken in the patch before the last one. I believe you can fix it in Sims 4Studio. Or check before you download.
With recolors, you must already have the mesh in the game or the recolors won't work. If it's a recolor of something in the game, you're good. But if it's a recolor of someone else's work, you'll have to also download the original to have the mesh.
CC beds were broken in this last patch. You can fix them with a batch fix in Sims4Studio.
A hint: Don't download a bunch of CC without checking whether it works in your game or not. If I download two or three pieces, I check out how it looks in CAS and how it functions in game. I don't like a lot of clipping, so if my Sim's hands are sticking through her skirt, that outfit is deleted. A lot of pieces look very different in game than they do on Tumblr.