Choose a company with a good history and reputation. Check how long they have been in business. Check their financial strength. Review annual reports of companies. Go for a company that is part of the top 10 best performing.
Majority of the companies have the same products. They only differ in marketing and customer service.
To choose a company, see Top Insurance Providers in the Philippines.
References
Ready2Adult PH. (2020, October 4). LIFE INSURANCE FOR BEGINNERS | INSURANCE 101 PHILIPPINES | What you need to know. https://www.youtube.com/watch?v=kWBS4WKa7yA&list=PLX5F5fa6EHdq0fCY9ehomzPNaUoYekLkP&index=2