Few ideas
- join groups such as "new in Franfkurt" on facebook. I met quite some nice people and women on these groups. They are in the same situation as u in not knowing anybody and open
- try dance classes (e.g. salsa or tango argentino). Especialyl for th later there usually are more women then men and in roguhly the right age groups. Being tight on fun is bullshit - u should make the time. Get your priorities right. A grilfriend will cost u much more anyway
Bars and clubs I would also not recommend given your experience with women - Environment is to high energy and fluctuating and the women there have low attention spans and freinds are likely to pull them away.
tinder and online dating - give it a shot - I personally don't like it much. Women tend to get spammed by contact requests and thus pay extremely little time with each one in the beginning. So the initial beginning is often a numbers game. But yes you will meet chicks there. Have your picture reviewed by a female freind and tell her what it's for.
Btw. if you are in DArmstadt - really go to frankfurt a lot - darmstadt is full of the men from TUD. Frankfurt is easier.
