Web page versus Android app
A web page lives in a browser. An Android app lives on the home screen and is packed as an APK. You can learn both. They are different buildings.
Week 5 option
HTML labels pieces of a page.
It is not a programming language in the same sense as Python. It does not make choices or repeat work. It puts names on heading, paragraph, and link. Then stop.
Tap heading, paragraph, or link. This is a page showing a page.
Stay on Python if this feels early
Week 5 is a fork, not a demand. More Python is a complete choice.
Next step
Kotlin is the usual language for newer Android apps. Museum visit, not homework.