Please help me with storage

@myaw0rld73  You can find instructions for setting up iCloud Drive in Windows here (scroll down to the Windows computer section):

https://support.apple.com/guide/icloud/set-up-icloud-drive-mm203b05aec8/icloud

Except you want to disable this, or at least disable sharing for your Documents folder, or Sims 4 folder.  I can't give you exact instructions because I don't know how you've set up iCloud on your PC in the first place or which option is best for you.  Personally, I would disable sharing entirely, but perhaps you have a use for it.  The important thing is that your Sims 4 user folder is excluded.

If you aren't sure where to look, check out the two other guides linked in that Windows section.  If you still don't know what to do, let me know how you've set up iCloud and whether you have other uses for it.

Regardless of your preferences, the answer is definitely not to buy more iCloud storage.  That's completely unnecessary.