Reset laptop not working due to disk space?

I wanted to reset my Trekstor (Windows) laptop today. So delete all data and set everything up again, etc. That doesn't work because I don't have enough storage space. Where does that make sense? I want to get rid of everything and not save it somewhere. Here is another picture of the message:

I've already deleted a couple of large programs. As I said, I want to delete everything without a backup, etc. Does anyone have any ideas what I can do there?

Simply format the device cleanly. Then everything is gone.

Just delete a few things from the laptop

Deactivate the Windows swap file, so you definitely have 1-8GB free.

I did, I deleted all the programs that I loaded on it

Create a Windows boot USB stick, go to the BIOS and change the boot sequence if necessary and reinstall Windows. Then the hard disks are automatically pre-mat.