You have a new workbook with the new name 'reshapedMaleControl.xlsx'. If your original workbook had multiple sheets, it looks like your new output workbook will have only one sheet with all the input sheets appended to each other. It doesn't look like you're "reorganizing" anything, just appending them all. Not sure what you're after. You already gave the new workbook name. Do you want multiple sheets in your output workbook? Or do you want the single sheet with the new workbook name?
Do you want the input name to be a variable and create the output name from it, like
inputBaseFileName = 'Malecontrol.xlsx';
inputFullFileName = fullfile(pwd, inputBaseFileName);
fprintf('Reading input workbook : "%s"\n', inputFullFileName);
sheets = sheetnames('Malecontrol.xlsx');
% code snipped
% Now create output workbook name
outputBaseFileName = sprintf('reshaped%s.xlsx', inputBaseFileName);
outputFillFileName = fullfile(pwd, outputBaseFileName);
fprintf('Creating output workbook : "%s"\n', outputFillFileName);
writematrix(reshaped, outputFillFileName);
