If you're getting plagiarism warnings using ChatGPT, you're prompting it wrong.

To make it undetectable: tell ChatGPT to use certain styles and tones.

Copy-and-paste:

“Write an article on (topic) focusing on (this) and (this) and discuss the difference between (this) and (this) and explore how (this) interacts with (this). Use an informal and relaxed tone, but be semi-professional”