order by is not working

Hello Team, we have a table where files column like FR1 ,FR10 ,FR2 ,FR3 ,FR4 ,FR5 ,FR6 ,FR7 ,FR8 ,FR9 when we are using order by to the column of this file to get the F10 value below F9 is not working its occupying the second column, the testers are asking to get the data in the following form FR1 ,FR2 ,FR3 ,FR4 ,FR5 ,FR6 ,FR7 ,FR8 ,FR9 ,F10 ,F11 like that. please suggest how to achieve this. currently i am using the query SELECT distinct file_id, file_type, file_inc_01, file_inc_02, file_week_0_10, file_week_10_25, file_week_25_45, FROM [dbo].co_file_tb order by file_id