The most important info is that the front fork looks bend and should be checked.
Frame shape definitely looks German to me, "ein Schwanenhalsramen" . I'd say Adler, but those frames usually don't have the trusses that close together. Don't recognize the hub either, could be a Fichtel & Sachs, don't know other German manufacturers, but they've never had any consistency in the way their hubs look from the outside. It could also be a bike from the 50's or even 60's, as not much happened in bicycle design in those years inbetween.
You don't speak any German? You could feed German into google images and look for simular frames, or search in Germany with Duck Duck Go.
Frame for ladies = Damenramen
This ladies frame = Schwanenhalsramen
Bike(s) = Fahrrad/Fahrräder
26" = 26 Zoll
Hub(s) = Nabe(n)
Coaster brake = Rücktrittbremse
The most exceptional thing on the bike seem to be the lugs, but I don't know the German word for that. Also there is someone here who has a Vaterland bicycle, which is an old German manufacterer, maybe he's into German vintage.