Learn HTML, CSS and Javascript. That's probably what you'll get the most out of for time spent learning.
This'll allow you to build websites, mobile apps for both android and ios(if using frameworks like phonegap), games(with unity and html5), servers (nodejs), bots for web based stuff, etc.
Of course if you want to develop desktop software or more complex bots or mobile apps, you'll need to learn other languages, but most of these languages actually allow you to use html, css inside them when designing user interfaces.
So there's no loss in learning them even if you move onto something else later.
I beg to differ, Sure. Learn HTML, CSS and Javascript and make your own website. Mobile applications and web applications are becoming something that's being commonly used in the modern day of tech where everyone has their phone almost with them at all times
If you want to make any profit with Programming, I would suggest Swift/Java because you can create your own mobile application, put ads on it and make some profit from it. Think about it
Which one would be most commonly used?
A Mobile Application or a Website?
Even better, if you'd like you can push notifications to your userbase to make them interact with your application, Though this is also possible for Websites too but you'll need to understand what kind of users you are going target and if determine if it's worth their time to interact with a website or a mobile application and why