Android Galaxy tablet - recover deleted Minecraft application data (Minecraft worlds)

My son's Minecraft worlds have been deleted from his Samsung Galaxy Tab A tablet. The data was on internal memory, not any SD card. If you have experience recovering MInecraft worlds data from an Android tablet, I would like to hire you. I understand that some or all of the programs designed to recover data from tablets look for specific kinds of files but do not recover Minecraft worlds. It would be best if we could speak before proceeding so I understand that approach you take and teh risks involved. I'm not so worried about the tablet as I am the data, which is very important to my son as he has spend hundreds of hours creating the worlds, circuits and programming code inside the worlds.