***If you have another Mac and A Flash drive:***
Download [link|https://macdaddy.io/install-disk-creator/|This|new_window=true],[br]
And [link|https://apps.apple.com/us/app/macos-sierra/id1127487414?mt=12|this|new_window=true]
***If you don't have another Mac:***
Hold Command + option + R To get the internet recovery going,[br]
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Then Click utilities in the upper left corner, Then select Disk Utility.[br]
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Select the SSD then format it to APFS.
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Feel Free to comment If you have any questions![br]