My issue is I seem somehow wired to wake up early. I sleep better when I go to bed earlier. Screen use seems to have nearly no impact on my sleep, and what has

My issue is I seem somehow wired to wake up early. I sleep better when I go to bed earlier. Screen use seems to have nearly no impact on my sleep, and what has the most impact is the type of screen usage (i.e. reading news, books & watching film is fine, but instagram/tiktok before bed tends to lead to worse sleep for me).