How can I change my account email

Click your avatar or the up-arrow at the bottom of the left-side panel, then select Profile Settings.

You can directly click on your email, or go to "Sign in & Security" and click on "Manage". A panel will show up on the right.

In that panel, you should see a button: "+ Add another email ". Click on it and add your email address.

After adding the new email, you will need to verify the email address.

After verification is done, you should see the button " Make Default ". Click on that to change the default email address. You may choose to delete the past email address.