My files in usb is not recovered after using diskpart and recovery tools

what will i do to recover all my important files(word,excel, pictures) in a usb that has been previously cleaned using diskpart. in fear to lost all my important files, i copied 2 files from my email to my cleaned usb before using a tool to recover all my files.. i am not well versed of this things. i downloaded minitool and wonder share photo recovery to recover my files but to no avail. can anyone please help me.. the photos are my memories way back 10 years and i have no back up for it.. my files are important because it is my personal files used in my job.. please anyone..