How can I aviod cheetah on steem it?

Cheetah is a bot. Cheetah have find out the copyright or similar content. If cheetah can find out a content that has been copyrighted, Then cheetah commented on that post. Cheetah warn many times for copyrighted content.

If you want to avoid from cheetah, you should avoid write copyright content. You should write content from yourself.

You should not copy content from internet or online and you should not take photo from internet. If you take photo from internet, you should mention source. I think you've got your answer.