I voluntarily left my job providing 8 weeks notice ame was hospitalized 3 days after I lost coverage. The company has to offer insurance, right?

1) I provided four times the contract notice 2) salaried employee 3) triple called for additional info after my exit interview because I wasn't given any information if I owed for vacation days, etc 4) hospitalized and contacted employeer >30+ later once I realized I should have been offered COBRA and had ~$10,000 in medical bills that needed to be paid immediately 5) never received notice or was told about COBRA by the company until I reached out in September