1. Nikon D5600 (AF-P 18-55mm + 70-300mm VR Lens)
Nikon D5600 would be one of the best bet for beginners in the sub-50k category. You could capture excellent photos with its 1.5x crop sensor.
It is sturdy and the battery endurance is impressive.
You also get features like time exposures and advanced Auto ISO customizability. The basic connectivity options like Wi-Fi, Bluetooth, and NFC support are also present.