Once everything is shut down, press Windows + I to open Settings and go to Apps → Installed apps (or Apps & features on older ...
When you see System & reserved taking up a lot of space more than 40GB on your Windows 11, you can fix it following this ...
You can use the DISM command to free up SSD space without deleting anything important ...
I bet you've not opened any of them recently.
The Windows built-in uninstaller handles the basics, but these tools go much further with batch removal, leftover cleanup, ...