this is a small part of my code which for some reason isnt working, the radio button – user_ans more specifically always return none, when before it returned the actual response- i have no idea what happened and i cant revert it. here is the code.

from tkinter import *
from tkinter import messagebox
from tkinter.ttk import *
import tkinter
from time import *
import time
import PIL
from PIL import *

#----       ----#
Qright = 0
Qwrong = 0
current_question = 0
pink = 0

def Quizz():
    global pink
    menu.withdraw()
    # define question dictionary
    question = {
        "2+3": ['2', '3', '5', '9'],
        "2-1": ['2', '1', '4'],
        "3+3": ['3', '6', '9', '7'],
        "2+5": ['2', '3', '7', '9'],
        "2-2": ['2', '1', '0'],
        "3+1": ['3', '6', '4', '7'],
        "2+6": ['2', '3', '8', '9'],
        "2-6": ['2', '1', '-4'],
        "3+6": ['3', '6', '9', '7'],
        "3+2": ['3', '6', '5', '7']

    }
    # define answer list
    ans = ['5', '1', '6', '7', '0', '4', '8', '-4', '9', '5']




    def start_quiz():
        print("stage6")
        start_button.forget()
        print("stage7")
        next_button.pack(pady = 10)
        print("stage8")
        next_question()


    def next_question():
        print("stage9")
        global current_question
        if current_question < len(question):
            print("stage10")
            # get key or question that need to be printed
            check_ans()
            print("stage14")
            user_ans.set('None')
            print("stage15")
            c_question = list(question.keys())[current_question]
            print("stage16")
            # clear frame to update its content
            clear_frame()
            print("stage17")
            # printing question
            Label(f1, text=f"Question : {c_question}", font="calibre 12 normal").pack(anchor=NW)

            print("stage18")
            # printing options
            for option in question[c_question]:
                print("stage19")
                Radiobutton(f1, text=option, variable=user_ans, value=option).pack(anchor=NW)               
                print("stage20")
                print(user_ans.get())
            print("-")
            print(user_ans.get())
            print("-")
            current_question += 1
        else:
            next_button.forget()
            check_ans()
            clear_frame()
            output = f"Your Score is {user_score.get()} out of {len(question)}"
            Label(f1, text=output, font="calibre 25 bold").pack()
            Label(f1, text="Thanks for Participating",font="calibre 18 bold").pack()
            
            '''f = open("results.txt", "a")
            f.write(f"n {user_score.get()}/{len(question)}")
            f.close()
            exit_button = Button(root, text="Return to menu", command=lambda:[deiconify,root.destroy]) 
            exit_button.pack(pady=20)'''




            


    def check_ans():
        print("stage11")
        temp_ans = user_ans.get()
        print("stage12")
        print(temp_ans)
        print(ans[current_question-1])
        if temp_ans != 'None' and temp_ans == ans[current_question-1]:
            print("stage13")
            user_score.set(user_score.get()+1)
        else:
            return


    def clear_frame():
        for widget in f1.winfo_children():
            widget.destroy()


    if __name__ == "__main__":
        print("stage0")
        root = Tk()
        print("stage1")
        # setup basic window
        root.title("Main Quiz")
        root.geometry("850x520")
        root.minsize(800, 400)
        root.wm_attributes('-transparentcolor', '#000001')

        user_ans = StringVar()
        user_ans.set('None')
        user_score = IntVar()
        user_score.set(0)
        print("stage2")
        print(pink)
        if pink == 0:
            Label(root, text="Quiz", font="calibre 20 bold").pack()#could add background="colour"
        else:
            Label(root, text="Quiz", font="calibre 20 bold",background=("pink")).pack()#could add background="colour"
            root.configure(background='pink')

        print("stage3")
        #Label(root, text="", font="calibre 10 bold").pack()
        print("stage4")
        start_button = Button(root, text="Start Quiz",command=start_quiz)
        start_button.pack(pady = 10)
        print("stage5")
        f1 = Frame(root)
        f1.pack(side=TOP, fill=X)

        next_button = Button(root, text="Next Question",command=next_question)

        root.mainloop()

Ive tried to replace the radio button but i need to use it.
ive tried replacing check_ans with a new function and other options but nothing is working. I just cant fix it and this will take ages to fix i am just a student and all my searches are returning solutions with ttk.Radiobutton which i think doesnt apply to me. My code is very specific and its hard to search so i just need personal oppinions. Thanks!