There is no direct way to delete a complete notebook. There is an option to delete version of notebook for which we navigate inside the notebook settings.
(Its a little hard to manage notebook profile section.)
Get a delete button in the 3 dot menu of notebooks
An un-archive button in the 3 dot menu button in Archive tab
Probably having a default collection named “Likes” instead of a separate tab
A drag and rearrange notebooks option for organising them better like how we have in github.