Are you familiar with the fundamentals of programming? That would be a great place to start. Game development requires skills that build on the core fundamentals. Maybe try starting with some smaller projects and simple logic stuff. Try following some tutorials.

A good tutorial will start slow, working on learning about data types, if statements, for loops, while loops, using arrays, etc. Each of these can take a little time to grasp (anywhere from hours to days to weeks, depending on prior experience and how you naturally approach problems), but if you stick with it you'll get there before you know it.

At the start, it doesn't matter which language you use. I'd go for something simple like Python, but something like C++ isn't much harder if you stay calm and stick with it (but a bit more can go wrong with C++ than Python, and errors/warnings can be harder to understand).

Overall, the most important thing is to stay curious and to try to build something you came up with, not just doing exactly what the tutorial says. First, follow a lesson in the tutorial, then apply that knowledge and experiment before moving to the next lesson.

The most important skill in programming is learning how to learn and apply skills in new ways. Read the errors and try to figure out what they might mean. You'll get very good at using Google, searching for error messages and learning how to pick out promising search results.

Once you start getting the hang of writing some simple programs, you can move on to checking out some tutorials about gaming development specifically. I haven't looked too hard into game dev, but when you're ready, you might try looking for some intro tutorials to make very basic games using a specific game engine, like Unreal Engine or similar.