A working solution to recognize a couple of pages scanned text (or photos with text) in Ubuntu 20:
# install tesseract sudo apt install tesseract-ocr # find module with the language you need apt-cache search tesseract-ocr # Let's say we need german. Then we install sudo apt install tesseract-ocr-deu # Install GUI tool sudo apt install ocrfeeder
The interface is relatively simple. It may require setting the default language in the settings.