Just got laid off, what should I do first? after 4 years as an operations analyst

I lost my job as an operations analyst and I am not sure what to do first. This is my first time dealing with any of this. I have a few weeks of savings and a rent payment due. Which steps were urgent?

Thanks for writing this out. I went through something close to it 9 months ago, and it settled down once I kept a simple log of every call and form.