Lost my data

Dear Sir/madam. My name is Harish
2 days back i changed my user account actually i was created a new user account and delete old user account after then i am log in with the new account.

After log in here i don’t saw some of my desktop folders with lot of data in that..

Please tell me the solution to get my data.
I don’t know much about the computer.. so tell me the easiest way.

Thank you…….