[tesseract-ocr] training on tesseract 4.1 with tesstrain.sh

Hello! For personal reason, I'm trying to train the eng model from scratch with 4.1 ver, using the tutorial from How to train Tesseract 4.00 | tessdoc (tesseract-ocr.github.io) (I know tesstrain.sh is no longer

[tesseract-ocr] Training of tesseract

Hi, I want to use tesseract OCR on images with varying font types and font sizes. Also there is a lot of background variations in each images such as multi-colored background, background with some designs, illumination variance, white background. If I simply apply a tesseract with some