It's easy to make a web site, just like it's easy to start a business or take a picture. Anyone can do it. If you're a business owner you know that what you do is easy.
Doing it well is hard.
I began making web sites for fun in the mid-1990s. And it was easy. Now, more than 20 years later, it isn't so easy. Craftsmanship matters. The complexities of code that does something interesting and useful, the balance of design and performance, leading the visitor to do what you want them to do ... these things come with experience, from learning the hard way.
There are web technologies I started learning before they were even ready for prime time that are now dead from old age. I've lived through the fads that were going to change the web forever. I've seen the mistakes, some of them very expensive, companies have made.
I've made some mistakes.
That's how you become a craftsman. That's how you go from building a dog house to building a home.
That's how you become a professional.
So you can make a web site. You can get a relative to do it. Or you can run your business and let someone as professional as you handle your internet needs.