So I checked out my SSD and what took up so much space. I saw my User was taking up about 67GB, but as I went in and marked all the folders in it, it only came up to 20,9GB, which means more than 40GB just sit somewhere I can't see. Anyone knows what this is?
Treesize is another way to identify actual cause: https://www.jam-software.com/treesize_free/
I wouldn't delete appdata as it contains info for all loaded programs - https://answers.microsoft.com/en-us/windows/forum/windows_10-files/clearing-the-appdata-folder-and-the-temp-files/bb39b5b3-5015-45f1-a9d8-6cf26aeec167
I investigated the files a little deeper, and noticed it was a lot of Adobe files from projects I'm done with that took up most of the space.