Meaning of storage is the replacement of Disk Cleanup for the modern world. It frees up space on your computer by removing items such as trash content, temporary Internet files, and temporary files from applications. This also includes the Downloads folder, but you can change it if you do not want Storage Sense to empty it.
We have already mentioned how the The Free Up Space tool of Windows 10 will delete your downloads. default (although you can turn it off too). Storage Sense is the automatic equivalent of this tool and is the intended replacement of the venerable Disk Cleanup tool. By default, Storage Sense considers your Downloads folder as a temporary folder, removing anything older than 30 days when it is run. If you use your downloads as a more permanent storage area for downloads, you can prevent Storage Sense from deleting your downloads.
How to prevent storage from deleting your downloaded files
Open the Settings application by pressing Win + I and then clicking on "System."
On the left side of the System page, click the "Storage" category.
Under the "Storage Direction" section on the right, click on the "Change the way we are freeing space automatically" link.
Now open the drop-down menu "Delete files from the Downloads folder" and select the option "Never".
Once you're done, Smart Sense continues to run periodically, but leaves your valuable downloads unattended.