Folder Lost due to uninstalling Avast Free Antivirus

Dear Guys,
Need your help please, this morning my Avast was always popped up and disturbed me much.
So I uninstalled it and installed it again but since my C drive is full so I installed it to D Drive along with my important files.
And there was a problem occurred, the file that I opened always be on read only.
Then I uninstalled it again but all the files on drive D is gone.
Could somebody help me to restore those files?
Thanks

Hi,

we are looking into the issue. To recover the lost files please try to use Recuva https://www.ccleaner.com/recuva/download