Hi Jonathan
From your screenshot, you have a 128GB (118GB usable) internal SSD drive, is that correct?
If so, either way, you need to clear space on that drive, an SSD must always be minimum 20% free space, otherwise it is inefficient, SSD drives are very different from hard drives
To get a true picture of the actual free space on that drive, click the link below to download a small free utility called Treesize. Using that tool, you will instantly see where this space is being used
https://www.jam-software.com/treesize_free/
Please provide a screenshot of your C drive in that TreeSize utility . . .
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