Finger print lock app

I am searching for a fingerprint lock app for my old Samsung J2. If anyone knows any app like this can you please suggest me?

“A fingerprint scanner is essential for a fingerprint lock app to work.
So does your model has the scanner or not? If it does then why do you need an app?”

If your model is not equipped with the scanner then you can not have

Appvalley TutuApp Tweakbox

I think finger print lock is not safe at all for any devices. So my suggestion is not use it for any because i have bad experience for that previously.