It's not guaranteed, but these big tech companies always give severance with layoffs. At Microsoft I believe it was 1 month pay + 1 week pay per 6 months employed. And that's not including any extra downtime where you're not working but technically employed(maybe, due to 60 day notice required by WARN act, for example)

Unemployment insurance is mostly guaranteed if you lost the job through no fault of your own (weren't fired, didn't quit), but the amount varies by state. Good luck with receiving it in a timely manner. Took months for my wife to receive it when she was let go in 2023. If we'd been counting on her income we would have been homeless by the time the first payment came in.