Let me help you sort things out

def bubbleSort(arr):

    n = len(arr)

    for i in range(n-1):

        for j in range(0, n-i-1):

            if arr[j] > arr[j+1]:

                arr[j], arr[j+1] = arr[j+1], arr[j]

#https://www.sortvisualizer.com/bubblesort/