Qt is a very good language for starters and professionels available for Windows, Linux and Mac. Its easy to get started and as you move forward you can create advanst stuff. For example we have done a Projekt where we sort images based on image recognition.
Also some big Companys use Qt (Snnheiser, Panasonic, LG ...)
You can get it for free if you develop under LGPL or GPL licences from https://www.qt.io/.
The YouTube chanel voidrealms ( https://www.youtube.com/user/VoidRealms ) does a great job of explaining.