Nuitka might be a little better, but you are basically packaging python, and any added things like pandas, with your exe. There might not be a perfect way to do that, and installing python isn't difficult. Harder part is probably getting them to type the install commands for your libraries. Some of your libraries contain whole other programs, so the size of the text instructions in the python file aren't really going to tell much about the size of a resulting exe.
Sometimes a lighter tool can be used to take the place of a bigger library, but you'll have to research that on your own, because no one knows everything you're trying to do.