Tips on negotiating severance ?

Got laid off, not my fault they simply “eliminated my position”.
No severance. Nada. Just my paid vacation days I had earned (4x days).

I wrote asking for 2x weeks severance pay, they countered with 1x and week and asked I sign a severance contract. They have not shown me the contract yet.

Should I keep pushing for 2 weeks? Any tips appreciated.