Files missing after fixing performance

OK Špela, No probs… Pleased to see that you appear to be now basically sorted.
AVG Guru

First thanks for helping me, but I did as article said, I undid all the changes, restarted the computer but my data is still nowhere to be found. :frowning:
Please don't tell me everything is gone…

I used a trial version of AVG PC TuneUp. At the end of the disk check up it said there was an error during disk check up but I wasn't really paying attention, so I don't know which error, but now all my personal files from My Documents are gone!! I still have pictures, music and movies but no personal files.
What can I do to get them back, they are really important!!

OK Špela, No probs… Pleased to see that you appear to be now basically sorted.
AVG Guru

Špela, Have a look @ this article (https://support.avg.com/SupportArticleView?urlname=How-to-restore-changes-made-to-your-computer-by-AVG-PC-Tuneup).
AVG Guru

First thanks for helping me, but I did as article said, I undid all the changes, restarted the computer but my data is still nowhere to be found. :frowning:
Please don't tell me everything is gone…