Hi, I'm Sumit, here to answer your query at the Microsoft Community.
Apologies for any inconvenience you are experiencing. I am happy to help you today.
Most of the Storage is taken by Microsoft Edge Snapshots feature. It is a feature that restores Microsoft Edge to an exact version at the point it was saved.
You can delete everything under Snapshots if you don't wish to use that feature.
I hope this information is helpful. If you have any further questions, please feel free to reach out to us. Good luck!