So you're on Android? If you are you first gotta go to the "android" folder on /storage/emulated/0/ once you are on it you gotta go to the "data" folder once you're there look for the "com.gbpatch.ourlifenowandforever" folder and open it there should be a file folder and a save folder inside it, your safe files are located there, once you have located your save files simply copy and paste them on any folder you want,I recommend you to be one of easy access like documents.
Now, it may happen that your files cannot be copied, it happened to me on my tablet but, didn't on my phone, my guess is your chances of being able to back up your save files depend on your android build, if it's older than 11 you should be fine, if it is 11 or newer, your chances are on your android build being pure, the less "pure" it is the more chances you got at it.
This is just a theory and I haven't proved it so make of it what you want, and good luck