Facebook/Meta recently froze nearly all their hiring. Have you received any emails in the last couple of weeks?

Nah, their third and final email was from about a month ago (still recent memory of course, wasn't aware of the freeze).

They are hiring embedded systems engineers.

Are you sure about this? I know someone hired there in that time frame

They are only hiring SwEs that are L7 (maybe L6) and above.

I was being recruited for L6 as a privacy engineer until I took another offer a fortnight ago, fwiw. No freezes there that I’m aware of.

PE is hiring and you could transfer to a SWE position later.

How to go about applying for facebook as a software engineer not based in USA(based in Ghana to be exact)?

Amazon too

I get at least 2-3 Amazon recruiters a week messaging me on LinkedIn. I wish they just provided a checklist where you could check off companies that you would never work for and it would save these recruiters and me so much time and InMail messages.