Alternatively, you can also use
https://haveibeenpwned.com/They even have a notification service whereas you would be notified if one of the websites your certain email is registered on is hacked/compromised, so you can change your password on that website as soon as possible to prevent problems with your account.
This is a major security risk too you could alternatively download exposed passwords (which haveibeenpwned does not distribute but they are usually from public leaks) and check it offline because you are still entering a password into a different site other than the ones its used for which is a security breach in itself unless you trust a third party with storing your password to check if its been "pwned". It would be easier for you to just change your password than to check if its been leaked and is recommended to change your password every 2 weeks.