I don't know how to upgrade safari
How do I upgrade my Safari on my macbook pro?
MacBook Pro 15″, OS X 10.10
Back up your data, check your applications for compatibility, and depending on which MacBook Pro model you have, download El Capitan, High Sierra, Catalina, or Big Sur.
If you're using a version of Safari older than 10.1.2, you can install all Safari and security updates listed in the Mac App Store instead of upgrading the OS.
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