She has now spoken out about the negative remarks, claiming viewers were only shown "that side of me" and insisting she'd love to go back on the programme.
Lavigne tells Britain's Sunday Times Magazine, "I was actually really impressed by a lot of the singers and I gave a lot of positive feedback and was very encouraging. But the stuff that actually aired was mostly me making faces and laughing - so viewers only saw that side of me. (But) I hope I can go back on. I had a lot of fun."