Russian or german?

It's hard to say, since English evolved from German. It would be kind of hard to learn German grammatic rules, but the sound of the letters are similar to English. And it is a lot easier to spell in German, since the only letter that can go silent is h. If you can understand the Russian written language, then learn Russian. All you have to do is to learn how to speak it.

Russian grammar is more complicated then German grammar.

german would be easier because it's a lot closer to english both in words that sound close meaning pretty much the same and in structure. russian is from the slavonic language group and is also structured differently and also has sounds that are hard to hear clearly at first let alone pronounce correctly.