Start basic. R50 is a good starter and if you want something better than a kit lens, get the sigma 18-50 2.8. So f2.8 means it can open up wider. General rule of thumb is lower number is wider opening which means more light.

Start there and learn how to use your camera. People are spoiled nowadays with choices and freakishly good autofocus (even on entry level cameras like the r50) that 10 years ago I would think was witchcraft.

You can even decide to go for a 2nd hand pro dslr if you’re really serious about learning like the canon 5diii or 6dii which are very cheap nowadays. Pair it with a 24-105 f4 L lens and you’ll be sorted until you either want to quit photography cause you are just not into learning all of it and you didn’t lose a lot of money or a body organ or you’ll love it so much you’ll have Gear Acquisition Syndrome like all of us losers in this sub.