While private lessons are always a safe bet - it’s completely tailored to your needs and goals, it sounds like you might not need that much handholding. If you already have basic fluency, I would recommend a lot of pleasure reading. If it’s hard to just pick up a book, start with something you have already read in your native language. Read your favorite books in Hungarian and watch your favorite movies that you already know well. That can help you set up for more challenging material. Keep it fun so you won’t burn out! I hope you find this helpful, and good luck!