The best alternative to Chegg is Course Hero. It boasts over 60 million study materials. Not only can you browse textbook problems and step-by-step solutions, but you can also ask a question yourself and get an answer in as little as 15 minutes. It's cheaper than Chegg — prices start at just $9.95 per month.
Course Hero is a safe website that provides suitable materials as a teaching aid for students and instructors. Also, the website is a secure platform that is used by thousands of students without any cases of insecurity.
No, Course Hero does not snitch because their model of business does not associate with any learning institution. They also provide guidelines on their resource use policies that explain how students should use their service. You risk facing a penalty from your professor if you copy every content word for word.
Universities use advanced software to detect plagiarism, with Turnitin being the best-known software in this space. If a professor puts your answer into Turnitin and you've copied Chegg's answer closely, then Turnitin it likely to flag your answer for review.