I once made a program for calculations in engineering, but it wasn't general enough to be practical, so I thought of creating a simple coding language to script it. After the first day, I realized that creating a language was far more complicated than I had ever expected and would be a maintenance hell. So, in the end, I exposed the program routines to Python and made a GUI around it, so it could be scripted with Python.

Today, with AI and LLMs, creating a language is probably an easier task, but I still think it's smarter to do what I did. Any language you create will necessarily be mediocre and full of bugs. Don't reinvent the wheel.