How Do I find CF women to date

I am a phd student (29M) in my 3-4th Year of phd in top university. My phd university though in India is in middle of nowhere. I tried the childfreeIndia sub but most of people there are from metro cities. I very much belive in childfree so that me and my partner can live the harmonious life striving to have great partnership without much dependency.. I am thinking to go to AM route too but i don't think there would be much CF people too I m moving out of academic and likely going for corporate job in metro city in couple of years . I feel i should try it there but wouldn't it be too late:( Quite confused in this about all of this