I'd like to know how much learning a second language as a child has impact on this. I'm a native German speaker and English is my second language. I was very b

I'd like to know how much learning a second language as a child has impact on this. I'm a native German speaker and English is my second language. I was very bad in English at school and just got better in the last 5 years and I'm 35 now. On a side-note, I'm learning Spanish right now with Duolingo (as some kind of social media detox) and I like it. Every now and then I can understand more Spanish Tweets and the lack of grammatical explanations in Duolingo often helps to get "a feeling" for the language instead of really learning the principles. Wouldn't have imagined les explanation could be better.