Hey likopurba,
Thank you for your comments and review. Actually you can show your IG feed in 1 row only. All you need to do is set the number of columns to be displayed the same as the number of images you want to display in the row.
For example if you want to show 3 images in a single row and only want one row display then set your cols=3 and num=3 in the shortcode. If you want 5 images then you would set cols=5 and num=5 in the shortcode, etc.
