Accidentally deleted Acrobat Reader and lost files...help😱

Thanks to all. Your answers helped.

FYI I am changing my whole process. I am going to delete my iCloud backup and cancel future backups; they consume too much space anyway in Apple's attempt to make us purchase more memory. Also, as several have noted, the iCloud restore process is antiquated. I am beginning to be sorry that I ever went to an Apple platform, but that's another story. I have learned my lesson, so here is my future process.

1. Use iMazing to backup my iPad Pro 12.9 3rd gen to my PC. This helpful software is user friendly.
2. Save my files in original format on my PC using iMazing for easy transfer back to my iPad. Because I have been doing this periodically, I was able to retrieve most of my lost pdf files. 😁
3. Also, save my files on DropBox in original format for easy retrieval. I have sufficient free space.

Thanks again for your help.

So, I have to reset my whole iPad just to restore one set of files. Surly there is a less catastrophic approach??