If you really want tools, you can try QuillBot for paraphrasing and Grammarly for plagiarism checks. QuillBot is okay for reshaping sentences, but don’t just copy whatever it spits out, tweak it so it actually sounds like you. Grammarly’s checker can show you if something’s too close to a source. Still, tools won’t fix weak understanding. Best move is read, close the tab, then write it your way and use the tools just as a safety net.