Accidentally talk bad about my past employer during good interview

Felt like I did well during an interview and when he said “how was it like when your past employer was resistant to change” I said I don’t want to badmouth them and he egged me on saying it’s okay and I accidentally said they lazy to adept it. I feel like that was test and I already failed. I hate myself for saying that even if it’s true Update: I sent a thank you letter earlier today and he responded thanks for the interview and I will hear from the recruiter soon. So hopefully good news soon