App Cleanup will further subdivide the cached files of WhatsApp or other apps into cache junk files, pictures, videos, audio, voices, files, and other items, allowing you to choose what to keep or delete more conveniently. You can safely clean up the cache junk without affecting your chat history.
How to use the App Cleanup:
Go to Phone Manager > Clear up storage > App Clearup, and choose WhatsApp Cleaner or other apps
App cleaner reminder setting method:
Phone Manager > Three-dot icon in the upper right corner > Settings > App cleaner reminder
Related Articles:
How to use Virus scan of Phone Manager
How to use phone manager to clear storage?