First go to
https://haveibeenpwned.com/ and put in the Email you want to check.
a3051c3856bc9c047ac786094dea5c25.png
After that click on pwned!
If you see something like this :
d9f74a53fdfb9d5a396896b1b28978a1.png
Its time to change your Email/Pass !
Feel free to contact me if you have questions or help , here or on Discord : AgainThere#6601