This is Android Deltas Scripts—an open-source system for propagating content from any PC to any Android 11 or later device. Run the Python scripts here on your PC and phone to copy content initially; sync it later for changes made on the PC; and verify or export the content on your phone.
The net effect works around Android 11's revocation of USB access for POSIX programs like Python, and Samsung's removal of microSD cards. Direct syncs with Python code may be gone, but indirect syncs can work well if automated by tools like this. Because this system also works on PCs and older Androids, it can sync content across all your gadgets.
To fetch the complete package, get android-deltas-scripts.zip from learning-python.com, and unzip on your devices. To run the system, also get the source-code package of Mergeall; this embeds ziptools, which is also used here.