Lets be sure you have followed all the steps....
* Open GMAIL in a brower.....sign in if need be
* Click on your symbol...top right
* Click on MANAGE YOUR GOOGLE ACCT
* Left Side...click on SECURITY
* Than middle of Page see SIGNING IN TO GOOGLE
Here you will see 2 Step verification....If it is OFF, turn it ON...follow steps as prompted
After you have completed 2 Step verification. GO BACK to where you saw SIGNING IN TO GOOGLE
Now you will see LESS SECURE APPS, or Create a Less Secure Passwork..or something similar....follow promots that will generate a 16 Digit Password for your Google email
Enter this 16 Digit password in OUTLook replacing the one you have been using
opes this helps