You aren’t stupid, you are just new to this, and learning.
I have not used Tkinter much myself. But in a situation like this, my first step is to look at the documentation to check if I have done it right. Can you post a link to the documentation for Button() in the Tkinter documentation? Then we can read it together, and see if we can figure it out.
That’s a page within the Python docs about tkinter. Have you had a look at the top page of that section: tkinter — Python interface to Tcl/Tk? Reading that page, up until “Architecture”, will give you some orientation.
The overview suggests running python -m tkinter, “so you can read the Tcl/Tk documentation specific to that version.” Have you tried that? What tkinter version did it show? Also, what Python version are you using?
The overview points to TkDocs. TkDocs includes a Tutorial. Have you tried working through the tutorial?
Following some links, I got to the Ttk documentation for button at ttk::button manual page - Tk Themed Widget . It says that the options for colour styling are foreground and background, not fg and bg. Maybe try those attribute names instead?