My first html template has been rejected. Please, I need advice from experts

My template has been rejected. “We found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again.”

Template: https://nb-themes.com/templates/Noah/
Can anyone check the theme and help us to improve it?

Thank you

Hi @NB-themes

Your template is good, but a ask… do you copy idea template other author in themeforest or other sites?