https://www.musical-u.com/learn/sight-reading-music-why-to-do-it-and-how-to-improve/
Imagine living in the modern world and being illiterate. Think of all the great information that you would miss! Yet, that is how many approach the timeless art of sightreading.
For a useful work-around to speed up your progress, the Musical U team has put together these tips.
https://www.musical-u.com/learn/sight-reading-music-why-to-do-it-and-how-to-improve/