JavaScript~Front-End, Python~Back-End

[sirmay1]

I am from New York City and I am aiming myself to become a full stack web developer. Originally I was thinking about JavaScript with C# for corporate jobs medium to large companies. I was undecided for a couple of months on a back-end language so I've been just focused on JavaScript, HTML and CSS. I haven't even learned a framework or library yet because of this.
But the other day I made up my mind I would choose Python as a backend language.
My question would be it seems there are more jobs with C# versus Python for backend at New York City. But Python is highly used for AWS development which is also back-end development but more DevOps.
Does it make more sense to go with Python for backend since cloud serves for AWS is 1# for back-end cloud services or does it make more sense to go C# for backend development. Please feel free to send an experienced reply I would greatly appreciate it, thank you.