COBRA is only expensive if you don't get sick. No one is forcing you to take COBRA.
Call your benefits department and ask them what COBRA would cost for your plans, and if you are covered to the end of the month or just to your RIF date, or some other date.
Also ask when you have to say you want COBRA, vs when you actually have to pay the COBRA premiums.
Also understand that one of the biggest benefits of medical coverage is that the procedures only cost the negotiated rate: if you have no insurance, the doctor / hospital charges you whatever they want to. Best illustration of this was several years ago - I think in Oakland - some family finally got medical coverage, son had surgery, bill was $4,000, insurance paid some, family paid some. Insurance investigated further, determined that the son's issue was a pre-existing condition so insurance company was not responsible for any surgery costs. So the hospital billed the family for $17,000, yes over 4x the original cost.