While you can use ChatGPT to generate English activity suggestions, practice conversations, improve grammar, and learn the meaning of new words, it should be used with caution (= carefully).
ChatGPT still makes mistakes and produces confusing answers every once in a while (= sometimes) which makes it an unreliable English tutor. This is something you need to keep in mind at all times (= always). ChatGPT is not a silver bullet (= a magical solution) and can not yet replace traditional learning and in-person communication.
ChatGPT is just one of the many useful tools for learning English and as it continues to improve, its potential and value to English learners will follow suit (= follow the same example). Besides, it’s just fun to play around with!