Help identifying a bug which looks like a housefly and mosquito hybrid
This is a long-legged fly (Condylostylus spp).  Unfortunately your image is not sharp enough to give a specific species.  See this post of another Indian fly that is virtually identical to yours:
https://www.jungledragon.com/image/13762/long-legged_fly_-_condylostylus_spp.html