I bought the account with money and my password changed.

Unfortunately, we are unable to help with accounts that have been purchased since that is against the terms and services..
However, if it is still possible to change your password please refer to the following and change your password.
 
 
  Steam account password search procedure
   1) https://help.steampowered.com/en/wizard/HelpWithLoginInfo?reset=1&issueid=408 Go to link
   2) Enter your account or email address on the page you moved
   3) Follow the instructions on the following page to proceed