hello
most of the time when people want to learn a language they start with the basics such as every day routines or eating and sleeping habits, time and location.... without too much caring about the grammar.
As a linguist, let me tell you that all the languages seem to have the same universal grammatical aspects. however they differ in the options they provide the learner(s) with. for example in standard arabic or classical arabic, there is no problem in starting a sentence with a subject or a verb or an object, whereas this option is not born out in french or spanish where you must
start a sentence with a subject but not a verb unless you remove the subject sentence initially before the verb, and in this case you don �t call it a " subject" but a " topic or focus"
with german the situation is different since you have one position of the subject and two verbs positions like " ich mochte nach paris gehen" " i like to paris go" " i like to go to paris"
more clearly and syntactically speaking that is say in terms of grammar german is not less complicated than spanish. german belongs to germanic languages and spanish to romance languages. the grammar of german is harder than the one of spanish, but the vocabulary of spanish is richer than the one of german. yet both of them are nice to learn needless to say that spanish is widespread in the world so you got the possibilty to have more friends to talk to in spanish, but in german. it will be a plus if u could learn them both because you will have much more friends
good luck