Google "Exercise programmes", or search Youtube for a workout.
There's about a billion. I'm not exaggerating; there's literally about a billion of them.
But if you've ever thought, "I'm going to get in shape, and I'm going to do it with a workout plan I'll find online.", it's likely you weren't successful.
Not because it wasn't a good plan, it probably was.
It probably included a good selection of compound exercises.
It likely had a weekly schedule which allowed for adequate recovery.
And the chances are it included some form of progressive overload, increasing the load, reps or sets, from week to week.
So why didn't it work?
Because the plan, regardless of how good it was, wasn't designed for you.
Not for your specific goals.
Not for your abilities and skills.
And, perhaps most importantly, not for your likes and dislikes.
There's a good chance you selected that programme because you saw a picture of a model who "definitely did that programme" and thought,
"They look good. I want to look like that."