Help with learning code as a QA Engineer

So I’ve only been working in QA for just over a year but in that time I’ve gone from knowing zero about software development to picking up quite a lot. I work on an agile dev team and have been heavily involved in the automation project along with the senior QA.

We use selenium in C# for the automation with a cucumber (specflow) Nuget. laid on top for easy test reading.

I’ve learned some basic C# in order to write my tests. I’ve now picked up enough knowledge to be able to google any functionality I need.

I’ve also gone through a few c# courses online but I just feel I’ve hit a wall on my progress with programming. I know what I need for the automation but when I look at a devs pull request of a new feature I still look at it and wonder how/why it is written like that.

Where should I go next with my learning?