Most native speakers care less about your accent than about the fact that you bothered to try.

Your worry is about sounding wrong, and what other people mostly notice is that you made the attempt at all. Speaking somebody’s language badly is a form of respect, and most people receive it that way, with more patience than you expect. The accent you are embarrassed by is also evidence of something, which is that you know another language. That is rarer than a clean one.

Use the language with a real person this week even if you are sure you will sound clumsy. Say up front that you are learning, and watch how most people soften rather than wince.