If you are starting out, I promise it doesn’t matter. As far as lens, any kit lens (one that’s included, typically a “zoom” lens) that has a starting mm range in the 20s would be a good start. After you get used to the camera, look at getting a faster prime lens. This is a lens with a fixed mm, like 24mm and aprime lenses are generally better quality and sharper than zoom. The f-stop with as low a number as you can afford. The lower f-stop will allow better low light photographs, if that even matters to you. As a lens rule, 50mm is usually what our vision sees, anything less is considered wide angle. Anything more, and your zooming into be close to the subject.

My advice is to get an entry level mirrorless (you mentioned the r50) Canon, nikon or Sony. They have the largest lens catalog without needing adapters. Mirrorless will give you a more compact camera. You can save a few bucks and go traditional dslr (like the t7) or buy used and save yourself a ton of money.

For your budget, this is the best deal new I could see for what you mentioned.

https://www.bhphotovideo.com/c/product/1461735-REG/canon_2727c021_eos_rebel_t7_dslr.html

This is the r50 mirrorless https://www.bhphotovideo.com/c/product/1748811-REG/canon_eos_r50_mirrorless_camera.html

Or go used and spend half the money

https://www.ebay.com/itm/286249160060?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=aiczwwzdtj6&sssrc=4429486&ssuid=t9Q_b0GsRUi&var=&widget_ver=artemis&media=COPY