IN NEED OF HELP WITH MY MACBOOK AIR MODEL A2179

I purchased this laptop online. It's the Macbook Air Model A2179. It came out in 2020 and it does not have the M1 chip. It's the Macbook Air Retina Display.

When I purchased it, it was not unlocked. It had a password on it. So I went through some steps I found online to erase the Macbook Air. Once I did that, it started up like a brand new computer, and right after the new computer settings, it came to a page asking for a firmware password. That night I didn't put the charger on the laptop and it died. The next morning, my macbook would not turn on at all. I've probably tried 20 different ways to make this computer turn on, but the screen just stays black. PLEASE, ANY HELP OR GUIDANCE WOULD BE GREATLY APPRECIATED!!! :)