Iterator causes insertion in database without waiting

Hey there, i am new to make. In my scenario multiple urls get fed into interator, it then sends them one by one to an api, api sends data to supabase. but the problem is that data is being sent into array format columns but due to iterator, as soon as 1st urls is processed, it sends data to supabase. I want it to assemble all data in to array and then send into database.

Any help