I think it might be too large to take as hand luggage, you should be able to find the size requirements on your airlines website otherwise you'd be made to put it in checked luggage which could cost depending on the airline
From the photo I would guess its too large for hand luggage and as I used to have a bag similar & it definitely was too big but your the only one who can know for certain by measuring it
so what did you do? it too late to get another bag
I only ever take a rucksack for hand luggage as never need much but if going for longer I just used checked luggage primarily. I also have small suitcases which fit within the hand luggage sizes so could use that if needed but I generally dont.