How can it come that i have not seen this post yet???
...maybe I could have saved you from buying a wine from LIDL...there should be some "Getränkehändler" (=beverage store) in Freiburg that should have some fine wine from some local producers, either from Baden or from Alsace (Elsaß/ Elsass).
If you are looking for a car rather have a look
here or buy the weekly newspaper (Sperrmüll) at the next filling station than buying a car from someone returning home from the army because this cars usually won`t have a german operating licence (Betriebserlaubnis), they had an army registration but you won`t get one as a non-army resident, therefore you can`t registrate them. You should get a reasonable priced car from around 2-3000€, used car market in germany is a big market and you have lot of choice as you might have noticed yet

To come back to the wines... you bought some wine at ALDI and you call them drinkable?

...I mean...you just get the real cheap ones there... LIDL or REAL or all those stores, you just get wholesale headache stuff there. Usually the local beverage store has at least some wines. Good wine isn`t sold because they don`t produce enough to deal with the large wholesale stores. Drive around in the Alsace or in Baden or maybe even on the german wine route

;) (about 140km north), have some stops at some local restaurants and check out the wines there, they are mostly from local producers and you can find some real good vintners and vineyards around there.
What you should not miss for sure is the biggest winefest in the world, the sacred

Wurstmarkt in Bad Dürkheim, this year held from 12.-16. and 19.-22. september. You`ll get over 300 local produced wines (just wine from local /=city limits producers allowed) there, believe me, you don`t wanna miss that! (at least I won`t lol).
Or get to some local wine festivals around Freiburg (don`t think there are as much as in the palatinate region...)...found something what looks like a winefestival calender of that region
her - and the translated version
here, you will get the cheaper wines on the wine festivals but they are real reasonable priced and you won`t miss that fun...