Export SQLite data to a text file (csv, txt or xls) - Android Studio

Well, I'm having a problem that is eating me, the client needs the data that is stored in the application's SQLite database, and needs to be in a text format like csv, txt or xls, since it opens this data in excel even to make a conference if the data is correct. I have no idea how to do this, I need it to push a button and generate the database data and save it in the directory. I have read a lot of articles but they are not all in compliance.