How to structure big list of steps in an mobile friendly way?

I need to organize big list of steps in an user friendly way in a mobile app. I was hoping to do it like slider(title + image + description) in onboarding flow but with numbers (ex: 1/20) instead of dots. Or should I go with blog post format?

To provide some context: User can navigate back to list of steps anytime they want.

Any advice on this highly appreciated.