To update your personal information-such as your name, email, profile picture, or password- go to your Profile Settings.
You can go to Profile Settings from the bottom section.
First, click on the arrow icon. Then, click on "Profile Settings".

Now, hover over the profile picture icon. Click on the Update button. You will be able to upload your profile picture.
Next, click Save.

You can also change your name from here.
👉 To learn more about changing email, please check this article about making email the default.