Communicating with people who don't know the language well is a skill you have to learn and practice. It's not something people can do by default. Especially in their native language.
When you speak in your native language, the words may just come out automatically, without any effort. If you need to speak slowly, you have to be more deliberate and maybe even consider each word separately. If you don't remember that and just start speaking, you may end up speaking normally without even realizing that until it's too late.
When you speak in your native language, the words may just come out automatically, without any effort. If you need to speak slowly, you have to be more deliberate and maybe even consider each word separately. If you don't remember that and just start speaking, you may end up speaking normally without even realizing that until it's too late.