Shimano Sora replacement chainring

in The workshop
Hi, I need to replace my 52t chainring on my 8 speed triple chain set ( 52-42-30t). I have tried searching for this ring on its own but cannot find any Shimano brand online. I am unsure with generic brands as I am then unsure if I am buying a compatible chainring.
Should I be looking for a chain set and if so, what should I be looking for. I cannot find a replacement Shimano Sora 2300 chain set either. I would be very appreciative if someone could advise me. Thank you.
Should I be looking for a chain set and if so, what should I be looking for. I cannot find a replacement Shimano Sora 2300 chain set either. I would be very appreciative if someone could advise me. Thank you.
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https://www.spacycles.co.uk/m8b0s0p0/Drivetrain
I must admit I'm not sure myself about width/speed compatibility of chainrings and how they relate to the number of gears on a cassette, though as you go up in number of gears your chain gets narrower.