How is everyone getting AI photos of themselves?

I've been noticing that a lot of people are sharing AI-generated photos of themselves on social media. It's fascinating to see the different styles and techniques that people are using to create these images. But I'm curious, how are people actually getting these AI photos of themselves? Are there specific apps or websites that they're using? Or are they using some sort of advanced software that requires a lot of technical knowledge? I'd love to know more about the process behind creating these unique images and see if I can give it a try for myself.