Do you know the most efficient way to gather content for Website development?

Analyze your competitor's website and tweak it a little bit using ChatGPT. Get inspiration from websites like dribble and Behance. Or Hire a Copywriter.

I need some more context on what you're asking, like are you trying to make a website yourself?

I would mass google for images as a creative process. Just start stashing them. Try to find a consistent theme or style with them. Kinda have a rough idea of what it's like ahead of time. Then start putting it together. Shrugs. Phil