i am a Web designer and graphic designer with over 10 years experience and no need to explain more about myself, just want to say i know your problem, and i found some ways to fix it.
the first problem is, in the internet world, most people know technology, and there are a lot of website designers, that means if you post a thread here and say I want a website designer, hundreds of people come and say we can help you.
I have 3 solutions for you. create an ecommerce website for yourself, and use your knowledge to make it unique and make money, you are a designer but you don't have make money directly from design service. make a business and get help from your knowledge as a tool.
if you want sell website design, sell niche targeted , for example be professional in restaurant website design, it will more targeted and can get more customer.
and last solution, is get customers from real world!! Most people in real world, in your city have not website, and can't trust people on the internet, so go to them, show your portfolio, tell them what will they get if they have website and because they can see you , they will pay you much easier. most people on the internet know wordpress, wix and ... , your competitors are multi-million companies, so its better to get customer in real world