Reducing Excessive Thinking During Korean Speaking Practice

When practicing speaking in Korean, many people often struggle because they overthink grammar or vocabulary usage. For example, I want to use the expression "앞으로 잘 부탁하세요," but I get confused because I think "부탁드립니다" is the correct form I've learned. In such situations, excessive thinking prevents me from speaking confidently, and I end up hesitating even with simple sentences. How can I overcome these mental barriers? I believe that speaking naturally, even if I make mistakes, is more important. I would appreciate your advice or recommendations. Thank you.