Can I use my own custom Unsubscribe/Update Profile URLs?
Yes! First you need to create a new Subscriber field (URL type) within your subscribers list.
Then select list Settings -> URLs -> Use custom Unsubscribe URL or Use custom Update Profile URL and from the drop-down menu select the field you created previously.

Now you know how to set up your own custom Unsubscribe/Update Profile URLs.
Thank you for reading!