Everyone is different. But who wants to be different? Everyone! If we saw the same thing every day it would be the equal to coloring in the same coloring book. Woudn't you prefer spicing it up a bit if you could?
Plenty of creative things you are able to do with a website, design, the way they work, how they communicate...the details are Endless!!!
But this is a good thing!
Kcir

Websites are like the people who create them. They all have different personalities. .

You can change your theme at anytime. You can go to Jay WordPress training. https://my.wealthyaffiliate.com/training/creating-and-managing-your-content

Is a good start, keep asking question. There lot of helpful member will give you helping hand.

It depends on which theme you select when you Build Your Website.