How to detect digits from image by using Tesseract 5?

From bad picture you will never get good results. I played a bit and get this one:

import subprocess
import cv2
import pytesseract

# Image manipulation
# Commands https://imagemagick.org/script/convert.php
mag_img = r'D:\Programme\ImageMagic\magick.exe'
con_bw = r"D:\Programme\ImageMagic\convert.exe" 

in_file = r'ZZ_Numbers.jpg'
out_file = r'ZZ_Numbers_bw.png'

# Play with black and white and rotate for better results
process = subprocess.run([con_bw, in_file, "-resize", "70%","-threshold","60%", "-rotate", "-17", "-brightness-contrast","-15x30",out_file])

# Text ptocessing
pytesseract.pytesseract.tesseract_cmd=r'C:\Program Files\Tesseract-OCR\tesseract.exe'
img = cv2.imread(out_file)

# Parameters see tesseract doc 
custom_config = r'--psm 11 --oem 3 tessedit_char_whitelist=0123456789' 

tex = pytesseract.image_to_string(img, config=custom_config)
print(tex)

with open("cartootn.txt", 'w') as f:
    f.writelines(tex)

cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()

Output: