Backup Lightroom Photos after reinstalling application from Android phone

Hello everyone,

I uninstalled my Lightroom application from mobile and reinstalled again later. But when I logged in all the photos that I have have been dissapeared. Is there any way how to get back again my photos? 

I did not save any of them in the device. There was just in lightroom application. 
It was about 300 photos and presets also. 
Please can anyone help.

Thanks