After your exact location give backslash and your date variable (your date should not contain backslash(/), if date contains slash, it will crate another folder. so please avoid slash and give any other symbols). it will create date folders.
First of all path exists will not work on sp folders
Follow these steps
Use find files or folder activity nad give query for todays folder Now.ToString("MMddyyyy") and sub folder will be the folder till where it is to be created say till sucess in your case and assign output to results variable say results
Now use if condition with results.Count>0
On then side the folder is already created
On else side it is not created so use find files or folders activity again but now query will be success and sub folder will be till the folder containing success
After find files use create folder(this should be the office 365 activity) and give folder name as Now.ToString("MMddyyyy") and in folder location driveitem give the output of find files /folder results(0)