Anime which has a good storyline. Not just a random flashback, a good buildup, good relations between characters, not just like, set relations between two people in anime, nor the characters being fixed all the time, while being fixed.

Having an ambtition, Goals achieved, their transformation, problems that they face, unexpected happenings. No random twists, everything a lot meaningful.

Now, don't give frieren or Rezero, it feels forced. Mushoku Tensei could do.
There is Kingdom from my recent watch or the Legend of the Galactic heroes.

Don't give any formulaic ones too, like generic shonen, generic teacher or generic friends group. Do you think you have something like this?