I wonder what your background is. 30,000+ lines of code all in main package, and all able to access the same group of globals, all pointlessly declared with my? You do not need Raku, you need a beginner's programming book or a decent beginner's course. Otherwise you'll waste time rewriting the syntax details of your code while still programming in a subset of whatever your original language was. And frankly I wonder whether it was Fortran77 or Cobol.

If there is a way to organize your code into files, then there is a way to organize the code into packages ... likely the same!

Also it's not strict not working correctly, it's you not using it correctly.