Anybody can build a WordPress website.
You should be able to do it for under £50 yourself. I estimate you could build a website in a weekend just following this simple guide – https://youtu.be/2cbvZf1jIJ
If you don’t have the time to do it then you will need to hire someone to do it for you.
Advantages of this is that the resource you use to build your website will bring experience and hopefully give you some ideas.