Save game system does not work on android

In the editor the save game system works fine, but when i package my project to android and install the apk it does not work.
I have already looked at answers to this or similar question, but they didn’t helped me.

It’s very likely that you’re having permissions issues on the device that installed the APK. I had the same issue with all of my projects after I switched phones. Go into app settings and make sure you have given your apk storage permissions. Next check to make sure you have enough space to write files on the device. If it’s not that then I’m not sure.

Ok thank you:)I’ll try it.