Phoenix doesn’t bootstrap empty folders. It only generates folders once it wants to put something in those. But really folders don’t matter much for elixir files anyways.
To add a bit more context to what @LostKobrakai said, when you or a tutorial runs a mix task phoenix generator for live resources aka mix phx gen.live, it adds the following files which also creates a live directory if it doesn’t already exist for those last two files:
Overall, this generator will add the following files:
a context module in lib/app/accounts.ex for the accounts API
a schema in lib/app/accounts/user.ex, with a users table
a LiveView in lib/app_web/live/user_live/show.ex
a LiveView in lib/app_web/live/user_live/index.ex
a LiveComponent in lib/app_web/live/user_live/form_component.ex
a helpers module in lib/app_web/live/live_helpers.ex with a modal