When learning another language, it’s really normal for your comprehension to be way better than your production. Input > output. Just keep talking to people and consuming English media and it will come to you. The more you increase your input, the more fluently and naturally you’ll speak – it won’t sound like you’re speaking from a textbook.
Like you I also struggle with vocab though. What I like to do for focused study is watch a show or some piece of media and pick out some words I want to learn in context and make flashcards from them.