Separate system-wide from one-app slowness
If only one program is slow, the operating system may not be the main cause.
Check free storage and active apps
Low space and many background tasks can affect responsiveness.
Install supported updates
Microsoft's current Windows performance guidance includes installing Windows and optional driver updates and checking for malware.
Avoid random cleanup utilities
Use built-in operating-system tools and reputable vendor guidance rather than unknown 'speed booster' software.
General consumer technology information only. Interfaces and menu names change. Before resets, reinstalls, storage changes or other major actions, verify that important data is backed up and use current manufacturer/service-provider instructions.