That won't be easy I think. There are FTOs that specialize in foreign students, e.g. Air Alliance, they have large classes, accommodation at the airfield but they focus on professional pilots (ATPL). When I did my IR exams at the CAA, half of the room was filled with foreign students (mostly from India).
From what I remember, the PPL theoretical exam is only available in German. You are not required to attend any class for PPL so in case learning German is part of your plan, you could just get some English language PPL manuals and train for the German multiple choice exam. All questions are published and the vocabulary is very specific. Keep in mind that in Germany, PPL regulations are specific to each Bundesland although the question database is a common one.
Another issue I can see is how to get a radio license. Either you get one abroad and hope the CAA of your Bundesland accepts that or you bite the bullet and get a combined German/English license from your local Telecommunication Regulator (RegTP). Getting the CAA to accept foreign documents can be a bit of a challenge. I've had the German federal CAA (LBA) tell me that they do not consider the FAA to be a competent authority to judge my English language skills, only a German authority can do that.
(To be fair to the LBA, the FAA language certificate was not 100% ICAO compliant but it's nonsense anyway.)
This would allow you to choose any FTO in Dresden. Finding an English proficient instructor shouldn't be an issue.