Welcome to the community, @Hassan! Could you also let us know the question type for this variable? Is it a select one question type or is it a text question type?
Hello @Hassan,
I think, KoBo does automatic sorting by value (number of cases in choice category) and there is no option to change this.
Side-note: Be aware that KoBo report is a rather rudimentary tool for visualisation and analysis. You might switch to more powerful tools on the exported data, like Excel, SPSS, or dashboard tools …