Familiarize yourself with Google's E-A-T principles-- Proficiency, Authoritativeness
https://www.anobii.com/en/01f2a4a752a0d0f3e7/profile/activity
Familiarize yourself with Google's E-A-T principles-- Competence, Authoritativeness, Trustworthiness-- as they play a significant role in SEO-friendly material development.