My children (ages 5 and 3) were born and raised in Germany. We only speak spanish at home. They both went to day-care very early. Today they speak like natives

My children (ages 5 and 3) were born and raised in Germany. We only speak spanish at home. They both went to day-care very early. Today they speak like natives. When they play alone or between them, they do it in german, and while I defend myself in german quite good, he corrects me all the time, especially with the right pronunciation. Sad true is, lot of people, including educators are ignorant about multilinguism. They did at some point ask me and my wife to speak german at home with them because they were behind with the language. I will not even mention stupid ideas politicians have had about the topic.