Which insurance company is social security in?

Social security belongs to the national social security center, not to insurance companies, but to the state.

Insurance companies buy insurance for themselves at their own expense. I suggest critical illness insurance, accident insurance and hospitalization insurance. In case of any accident, the social security will be you 100%. You can ask the insurance company for help, but you need to buy insurance.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.