if I reset my MacBook Pro Will I lose the programs I purchased?

Yes.

For info: macOS Sierra: Erase and reinstall macOS

https://support.apple.com/kb/PH25649?locale=en_US

Please read all articles listed under the section "See Also", before proceeding.

Related: https://support.apple.com/en-us/HT204904

Yes, if they’re still available in the Mac App Store or on the creator’s website, or you have the install disks for them, as applicable.

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