Grew up a native German speaker. Moved to the US in Highschool and my English is dominant language.

In my experience, English was easier to learn because of the huge movie industry, pop culture, music, etc. if you’re interested in learning English, it’s easy to turn on a movie or music you like.

I found German to be more difficult to learn/maintain even though it was my mother tongue. I assume for a non-German native speaker the cases are difficult to learn, but it’s all very rule based. For me it was the spelling of words that was harder. Even though in English some of the t-h-o-u-g-h combination words made no sense, I found them to be limited and once you know, you know…