where are kivy app data stored in android

I have created a kivy app and successfully converted it to apk with buildozer on linux. And the app runs on mobiles. There is a logging system in the app and when user set an username and password, a sqlite3 database is created and the datas get stored there.
As I can sign up and log in to my app's account, the databases are clearly being created and working! But, where can I find the databases on my android phone?
Normally, when i was compiling and running on pycharm the databases were created on the same folder as the main.py file. But i can't find the databases on mobile? please help!!!
i am a beginner.