my Mac book air can not update 22 Apps
please help me to update or re-set to brand new so I can do it right . I brought in 2018 can not uo date os big sur
MacBook Air 13″, macOS 10.15
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You may have to either start your Mac into macOS Recovery to try & use macOS Utilities
(to erase and start over?) ~ Or, see if you could figure what macOS its running, now.
"You can also use macOS Recovery to reinstall the macOS you're using now, upgrade
to the latest compatible macOS, or install the macOS that came with your Mac."
• Find the model and serial number of your Mac - Apple Support
https://support.apple.com/en-us/HT201581
Use this page to correctly say what your Mac is, and its present OS.
We do not need more than macOS version + model number. No SN.
• How to get old versions of macOS - Apple Support | w/ Big Sur link
https://support.apple.com/en-us/HT211683
Learn how to upgrade to macOS Big Sur, the latest version of macOS.
Do you have a backup with Time Machine on an external USB drive? That can help a lot.
You need to be more specific on where your MacBook/Air is now, and which one it is.