How to redo and undo in MacBook Pro?

To see in-app purchases on MacBook, follow the steps given below:

• Open App Store
• Tap on your name
• Go to the Purchased section and there you can see the list of all the in-apps purchases that you have made.

To re download an app in MacBook, follow the steps given below:

• Open the Store app in MacBook
• Tap on your profile and open the Purchased section
• Find the app that you want to re download
• Press the Download button.

To bring back bottom toolbar in Mac, follow the steps given below:

• Open System preferences
• Click on Dock and Menu bar
• Deselect the auto-hide button and the bottom bar reappears.

To find corrupted files on MacBook, follow either of these ways:

• Reboot your system in single-user mode. In order to do it press and hold Cmd + S while booting
• Run disk utility to find corrupted files
• Open each folder one by one and check for any corrupted files.

To reinstall an app on MacBook, follow the steps given below:

• Open the Mac App Store
• Tap on your profile and click on Purchased
• Search for the app that you wish to reinstall
• Open that app and press the Install button.