I finally saved up enough to get the Canon R10 last month and it is so much more complicated than my phone haha. I have the lens it came with, the little 18-45 one I think? Its fine but I keep seeing these photos online where the background is super blurry and professional looking and mine just look... normal. I asked my cousin who does photography and he said I need a prime lens but I literally have no idea what that really implies other than it doesnt zoom in or out. Is it worth not being able to zoom? I feel like I might miss shots if I cant move the lens.

Anyway I am looking for something that wont break the bank because I spent most of my savings on the camera body itself. Im hoping to stay under like $280 if possible. I really want to take better pictures of my cat, Mochi, and I am actually going on a trip to Chicago in a few weeks and want to take some cool street photos while I am there. I keep seeing things about the 50mm being the nifty fifty but then someone else told me that on my camera it acts like an 80mm because of the sensor size? That is so confusing to me like why would the number change just because of the camera. It makes my head spin trying to figure out the math.

I also saw a 28mm and a 35mm and now I am just staring at ten different tabs on my computer getting a headache. I dont want to buy something and then realize it is way too zoomed in for my tiny apartment or that I have to stand across the street just to get a person in the frame. Since the R10 is a crop thingy (I think thats the word) does that mean I should look for a specific type of lens? I saw some that say RF and some that say RF-S and I dont know if they both work the same. I just want something simple that makes my photos look better than my iPhone 13.

Should I just get that cheap 50mm everyone talks about or is there something else that would be better for a total beginner who just wants that blurry background look without spending a fortune...