My old Skype is sending Baidu spam

My old skype account that I haven’t used in over 4 years is sending my friends Baidu spam links. I tried logging in but couldn’t remember the password. I checked my old email on haveibeenpwned, and found out it was in a data breach from 2017 for Yu-Gi-Oh Dueling Network. Is this Yu-Gi-Oh data breach still available online? Because I can’t remember my old email password either. I don’t know if that’s how the hacker accessed my Skype but I can’t think of another way. PS; that email was my main e-mail from ages 12-19, so I’m worried about this leak. I really don’t know what to do… Thanks