Which camera should i buy?

i know nothing about cameras and i'm taking my first photography class i chose the topic candles and my current camera is the PowerShot SX610 HS its has 20.2 megapixels and 18X zoom, my teacher told me that my camera will not work and that i should try getting a proffesional camera. so i went online and i found... show more i know nothing about cameras and i'm taking my first photography class i chose the topic candles and my current camera is the PowerShot SX610 HS its has 20.2 megapixels and 18X zoom, my teacher told me that my camera will not work and that i should try getting a proffesional camera. so i went online and i found the canon EOS 1300D and the canon EOS 750 D and the canon EOS 4000 D what do you guys think i should buy? (im a beginner) the main thing i want to be good in the camera is the focus, i want it to have a blurry background. i really want something affordable
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