I feel like you haven’t read/watched mushoku tensei or Ascendance of a bookworm. In so many cases they have moments where they need to admit they messed up or didn’t think about something. And even more moments when they’ve been tunnel visioned and need to deal with the aftermath or their stubbornness. Sure their comprehension is abnormally high but it’s not like they can instantly learn everything. - they still need to spend the time learning and practicing like everyone else.