Cannot access purchased MacBook Air A2179
I purchased a used MacBook Air A2179 at a local chain store that sells used books,DVDs, instruments, computers, etc. I got a good deal on a nice computer. However, when I get it home- it’s password protected. I tried to do the erase Mac thing, start Internet recovery but in the end it just wants a password. They said it wasn’t locked, but here it is. They don’t have the password and they have no way to contact who sold it to them. What can I do? I need MY computer that I legitimately purchased to open up. Please help.
MacBook Pro 13″, macOS 11.7