Is there a great AI app that creates posters for you?

Hello I've just tried to get ai to do this and the results were nothing like me can anyone help

Hello everyone, I'm Denise from Manchester UK and I'm excited to be part of this community. I'm a professional singer and actor and creative entrepreneur in the entertainment industry. I run my own agency, teach singing and confidence coaching at the University and am a self confessed personal development junkie and life long learner. Think I might be in the right place. I've got used to using Chat GPT to a certain level, to help with my writing but am eager to learn more so that I'll be able to understand the world my future grandchildren (finders crossed) will be functioning in and not be stuck in the past.