i purchased Ccleaner for my Samsung S10e. it is saying "give us access" "we're missing 1 permission. so we can't clean some things", when click on the arrow, it takes me to the Accessibility screen that has things like Screen reader, Visibility enhancements, hearing enhancements etc. I have no idea what to do now
Samsung hides this setting behind the "Installed services" option on this menu - if you tap that, you should then see the CCleaner item.
(Standard Android OS practice is to reveal this on the main Accessibility page, in a section labeled "Downloaded Apps", which is clearer; the Samsung method is, perhaps, tidier, but nonstandard.)