Please just adhere to the XDG-standards. Although my co-poster here didn't use the most diplomatic way of phrasing their grievance Grayjay is better off if it sticks to well established standards.

You would probably look weird at an software that installs itself in C:\MYAWESOMEAPPLICATION instead of using the Windows program folder like literally every other piece of software (except for legacy stuff like LTSpice). Creating visible directories in the home folder without asking is the Linux equivalent of doing just that.

Check if the XDG environment variables are set and store your stuff in these places — as it is now can be used as a last resort fallback. For reading config/data you do the same.