From my point of view there is a great way to improve not only your speaking skill, but also reading and even grammar. Just read a chapter of a book or an article, you can also watch something interesting and then just try to talk about what you've just read/watched. Use your own words. You can record it as well.

Improving speaking skills alone is definitely possible and can be a rewarding process. Here are some steps you can consider: Practice Regularly: Like any skill, practice is key. Regularly engaging in speaking activities, even if it's just talking to yourself or reading aloud, can help you become more comfortable and fluent. Expand Your Vocabulary: A rich vocabulary allows you to express yourself more precisely. Read books, articles, and listen to podcasts to expose yourself to a variety of words and phrases. Record Yourself: Record your spoken conversations or presentations. This will help you identify areas where you can improve, such as clarity, pacing, or pronunciation. Listen Actively: Pay attention to native speakers and how they communicate. This can help you learn natural intonation, rhythm, and pronunciation. Set Goals: Set specific speaking goals for yourself. It could be speaking for a certain amount of time without hesitation or using a new vocabulary word in a conversation. Engage in Conversations: Engage in discussions with friends, family, or language exchange partners. The more you practice speaking with others, the more confident you'll become. Public Speaking: If you're looking to improve your public speaking skills, practice by delivering presentations to an imaginary audience or even recording yourself giving a speech. Focus on Pronunciation: Work on correct pronunciation of words. Online resources and apps can help you practice and refine your pronunciation. Listen and Repeat: Listen to speeches, podcasts, or dialogues in the language you're trying to improve. Try to mimic the way native speakers pronounce words and phrases. Seek Feedback: If possible, ask others for feedback on your speaking. They can provide valuable insights into areas where you can improve.

Speaking skills can not be developed without talking to anyone else.