To change your password, you will need to click on your user profile icon in the top right corner of the Moodle page.
Select "Preferences" and this will navigate you to a new page. Underneath the "user account" column select the button "change password". This will bring you to a new page where you will be able to reset your password. You will need to enter your current password and your new password. Make sure you save your changes by clicking the "save changes" button.
Your password will now be successfully changed.