English and German grammar is quite similar as are some of the words. English grammar is so simple, especially if you start young. The problem in the UK is we don’t start young, and don’t have enough lessons in 2nd languages.

I have been learning Portuguese for 2 years which is quite similar to Spanish. The issues with Spanish is the pronunciation can be crazy. Learning to read it and write it is not too bad but to listen to it, when spoken at 100 mph (standard) is so hard. There is also all that masculine, feminine verb ending stuff which is OK with regular verbs but the irregulars are crazy.

My top tip is watch films with Spanish subtitles on. You can learn while having fun

Good luck