[Avahightime]

spanish for sure

[mcjazz69]

easy mandarin, but itll be much harder than your other languages. if you want something a bit similar to what u know then, go spanish

[Bruh Bob]

I say spanish or chinese but if u want to travel somewhere go for that langauge

[Yellowcow]

Spanish would be easy given your proficiency in those languages.

Mandarin is very hard but it pays off.

[Feromonas]

I should go for spanish or portuguese.

[bart1003]

Won't be that useful but since you already know German, maybe start learning Dutch?!