Why does commands of buttons on tkinter doesn't work

Question

So I'm trying to create turtles racing but with different windows at the same time. The play and exit buttons work but when I pick a color, nothing happens. Here's some of my code.

P.S I didn't add all of them because stack overflow wouldn't allow many codes

#miscellaneous
play = True
player = ' '

so these are the functions

def hide_frames():
    frame1.pack_forget()
    frame2.pack_forget()
    frame3.pack_forget() 
    
def chosen1():
    player = 't1'
    hide_frames
    frame3.pack()
           
def chosen2():    
    player = 't2'
    hide_frames
    frame3.pack()
        
def chosen3():
    player = 't3'
    hide_frames
    frame3.pack()
      
def chosen4():
    player = 't4'
    hide_frames
    frame3.pack()
        
def chosen5():
    player = 't5'
    hide_frames
    frame3.pack()
            
def chosen6():
    player = 't6'
    hide_frames
    frame3.pack()
            
def chosen7():
    player = 't7'
    hide_frames
    frame3.pack()
            
def chosen8():
    player = 't8'
    hide_frames
    frame3.pack()
        
def chosen9():
    player = 't9'
    hide_frames
    frame3.pack()   

def playy():
    hide_frames()
    play = False
    frame2.pack()
    

and these are my buttons

    button1 = Button (frame2, text = 'green', fg = 'green', command = chosen1)
    button2 = Button (frame2, text = 'blue', fg = 'blue', command = chosen2)
    button3 = Button (frame2, text = 'red', fg = 'red', command = chosen3)
    button4 = Button (frame2, text = 'yellow', fg = 'yellow', command = chosen4)
    button5 = Button (frame2, text = 'orange', fg = 'orange', command = chosen5)
    button6 = Button (frame2, text = 'indigo', fg = 'indigo', command = chosen6)
    button7 = Button (frame2, text = 'violet', fg = 'violet', command = chosen7)
    button8 = Button (frame2, text = 'maroon', fg = 'maroon', command = chosen8)
    button9 = Button (frame2, text = 'magenta', fg = 'magenta', command = chosen9) 
    

I already pack() the buttons but I didn't include it here because it will be too long

def start():
    t1.goto(400, 400)
    t2.goto(400, 300)
    t3.goto(400, 200)
    t4.goto(400, 100)
    t5.goto(400, 0)
    t6.goto(400, -100)
    t7.goto(400, -200)
    t8.goto(400, -300)
    t9.goto(400, -400)

#buttons
play_button = Button(frame1, text = 'Play', command = playy).pack(side = TOP)
exit_button = Button(frame1, text = 'Quit', command = root.quit).pack(side = TOP)
label = Label(frame2, text = 'please pick your color')
label.pack()
start_button = Button(frame3, text = 'START!', command = start)