What are the best life insurance options with level premiums that never increase during a fixed term?

Where can I find low-cost term life insurance around $500,000 coverage for $15–$25 monthly?

Which best term length fits a 32-year-old seeking low premiums and family protection (10 vs 20 vs 30 years)?

How does whole life insurance work over decades compared with level term life insurance?

What's best for final expense/burial coverage ($15k–$25k): small whole life/final expense vs short term, including for seniors?