do you have an nvidia GPU? If you do you can quickly install and run the best model yourself (inspyrenet) You only need to run one command to install (as one line):
pip install --extra-index-url https://download.pytorch.org/whl/cu118 transparent-background
Then to run it on an entire folder just
transparent-background --source FOLDERNAME
If you don’t have a GPU then the install command is
pip install transparent-background
for CPU-only (alot slower)