To restore photos, in fact, the deleted lost photos can still be recoverable if they were not overwritten by newly created data, so, you should stop using your device once you found the data was deleted or lost by mistakly. And try some free or paid data recovery software to scan your phone device (Internal memory). there are some recovery tool that i recommend to you, like Mobiledic, Andropidsoft, aisesoft, dr.fone and more...