How do you create an auction website like eBay/Amazon where others list their products?

I know this idea is nothing new and they're already here but since I use them so much I want to venture out and make something of my own for fun.

The only issue is that I don't know of a service like this at all and i don't know any coding.

I also don't know what to use for credit card info collection upon payment (will be legal) once a product is sold.

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I've also seen many websites however they all have such ugly formats– maybe there's a website that I haven't stumbled across yet?

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Any help would be amazing