AK098 wrote:
well I try to add my name (administrator) on my MacBooks disk to change permissions to read and write but then this happens (images attached). Is this normal or should change the Macintosh HD- data partition to read and write and if so how can I do that.
Your permission look normal here.
About the read-only system volume in macOS Catalina - Apple ...
Third party Cleaners /Optimizers/ Anti-Virus typically just add issues on the macOS not solve them.
You do not say what macOS you upgraded from as a reference point...
one System Preference I will draw your attention to is Security & Privacy>Privacy.
Here you can give special permission to applications > ex. Full Disk Access, Files & Folder. etc.
Change Security & Privacy General preferences on Mac ...