How to more accurately compare the characteristics between two images?

I have developed two methods using SIFT and ORB, but it seems to me that the points do not correspond correctly. Am I using these functions wrongly or do I need something different?

orb = cv2.ORB_create()
keypoints_X, descriptor_X = orb.detectAndCompute(car1_gray, None)
keypoints_y, descriptor_y = orb.detectAndCompute(car2_gray, None)
bf = cv2.BFMatcher(cv2.NORM_HAMMING, crossCheck = True)
matches = bf.match(descriptor_X, descriptor_y)
matches = sorted(matches, key = lambda x: x.distance)
result = cv2.drawMatches(car1_gray, keypoints_X, car2_gray, keypoints_y, matches[:10], car2_gray, flags = 2)

sift = cv2.SIFT_create()

keypoints_X, descriptor_X = sift.detectAndCompute(car1_gray, None)
keypoints_y, descriptor_y = sift.detectAndCompute(car2_gray, None)
bf = cv2.BFMatcher()
matches = bf.knnMatch(descriptor_X, descriptor_y, k=2)

bom = []

for m,n in matches:
    if m.distance < 0.75*n.distance:
        bom.append([m])

result = cv2.drawMatchesKnn(car1_gray, keypoints_X, car2_gray, keypoints_y, bom, None, flags=cv2.DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS)

Below the result of SIFT and ORB: SIFT and ORB result



Read more here: https://stackoverflow.com/questions/64921919/how-to-more-accurately-compare-the-characteristics-between-two-images

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