Form 1095-C comes from your employer. You can ask them to explain the numbers. I'm sure the numbers are not random.
Amounts that are deducted from your pay for health insurance are not necessarily tax deductible. In most cases they are not deductible.
Look at a pay stub, not your W-2, to see if health insurance premiums were deducted from your pay, or ask your employer. The W-2 normally does not show health insurance premiums.
