Run this program to scan the drive for files https://windirstat.info/
You can narrow down where the large files hide and you may find something you forgot about or is taking up more space than it should, people sometimes keep stuff in their Downloads folder they don't need or even have 2-3-4 copies of the same download. You may need to get a lar
If you have a small drive, Windows, it's updates, newer programs, games, etc.. can use up space pretty fast, may want to upgrade.