I want to remove the background from the image (with Python code, not photoshop!)

I want to remove the background from the image.
I used the code below, but the shoe part was erased from the picture.

https://github.com/danielgatis/rembg


I attach the sample image before and after.
I can know the quality level of the result I want from there.

and I want to judge things after removing the background.
( in the picture detect the T-shirt or pants)


thank you