I am a Nikon user so I'll suggest you to buy D5300 or D5600 . These are the best choices under 50k. But these are quite bulky , so if you want it for travelling purpose then you should go for mirroless sony cams. They are little expensive. Recently Canon launched a mirroless camera which costs around 58k . Reviews are quite good for that . Rumours are there that Nikon is also going to launch 2 mirroless cameras. Make your decision accordingly.
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Firstly, besides dslr there are mirrorless options too in your budget range like sony A6000, canon m50 and word is out there that both canon and nikon are planning to launch mirrorless dslrs by this year. And about dslr in your budget check nikon5600, canon 200d, 800d 80d etc. Nikon as slight upperhand here in terms of image processing and result while canon cams are all rounder with good ergonomics, connectivity, etc. I would personally pick A6000.
List of DSLR : 1. Nikon D5300 24.2MP Digital SLR Camera ( highly recommended)
2. Canon EOS 750D 24.2MP Digital SLR Camera
3. Canon EOS 200D 24.2MP Digital SLR Camera
4. Sony Alpha A68 24.2 MP Digital SLR Camera
You should go with nikon d5300 . I am using this camera since one year . I suggest this because this is under budget of 50k with two lens 18-55 for normal photography and zooms lens 55-300mm for wildlife Photography. it have rotating screen for 270° .
battery backup is good of 900 shots per charge