Python - turtle change direction on click

from turtle import *
import turtle

#screen
screen=turtle.Screen()
screen.bgcolor('lightyellow')
#boundary square
bound=turtle.Turtle()
bound.up()
bound.setposition(-300,-300)
bound.down()
bound.pensize(5)
bound.speed(0)
for side in range(4):
    bound.forward(600)
    bound.left(90)
bound.hideturtle()
#creates players
player1=turtle.Turtle()
player2=turtle.Turtle()
#creates shape
player1.shape('turtle')
player1.speed(0)
player2.shape('square')

#not to draw and position
player1.penup()
player2.penup()
player1.left(90)
player2.right(90)


#movement and buttons
#L
pen=turtle.Turtle()
pen1=turtle.Turtle()

pen.hideturtle()
pen.speed(0)
pen.up()
pen.goto(-329,-524)
pen.down()
for i in range(2):
    pen.forward(80)
    pen.left(90)
    pen.forward(80)
    pen.left(90)

pen.write('L', font=('Arial',15,'normal'))

#R
pen1.hideturtle()
pen1.speed(0)
pen1.up()
pen1.goto(200,-524)
pen1.down()
for i in range(2):
    pen1.forward(80)
    pen1.left(90)
    pen1.forward(80)
    pen1.left(90)

pen1.write('R', font=('Arial',15,'normal'))

#movement
def on_click(x, y):
    #print(x,y)

    if -300 < x < 0 and -300 < y < 300: # left part of rectangle
        player1.left(30)
        player1.color('red')
    elif 0 < x < 300 and -300 < y < 300: # right part of rectangle
        player1.right(30)
        player1.color('blue')


turtle.listen()

turtle.onscreenclick(on_click, 1)

speed = 5

while True:
    player1.forward(speed)
    player2.forward(speed)
    if player1.xcor() > 300 or player1.xcor() < -300:
        player1.right(180)
    if player1.ycor() > 300 or player1.ycor() < -300:
        player1.right(180)

turtle.done()