It seems like something is not working as we are used to, or probably I am missing something, and searching for 1 hour does not bring up any satisfying results.
I would like to remove part of one shape using another shape in a way that I can see the transparent background, and unfortunately, topics like this also did not solve the problem.
Here is an example screenshot, similar to what I would like to achieve:
I would like to remove the inner rectangle in a way to subtract the outer one and see the transparent background.
Thank you so much for your help.