I want to do a factory reset on my old macbook pro

FactoryResetonMacBookPro Said:

“I want to do a factory reset on my old MacBook Pro“

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Reinstall the macOS Anew:

1. Perform as Instructed Here: What to do before you Sell, Give Away, or Trade in your Mac - Apple Support

2. Then, Format the Disk:

Use: Shift-Option-⌘-R to format the macOS that came with your Mac, or the closest version still available. Go Here:

Reinstall macOS from macOS Recovery - Apple Support

Exactly what model and year is that Macbook Pro? Did it come with install dvd?