Web Dev vs Android Dev. Which One Should I Choose?

Hi guys!
This is my first post here. I’m still a beginner and I know HTML and CSS. I learnt that from Colt Steele’s course The web Developer Bootcamp.
My main goal is making money (even though I like this stuff). But money is the most important thing right?
Another important thing I’m looking for is being my own boss completely (not even a freelancer).
So, these two points are my main goals:
Making money while still being my own boss. Based on this, which one should I go with?

If you’ve got a good idea for a game or an app than I would go with android development. If your looking for money just think how much even free games make when they are popular…