I can create a turnkey landing page on WordPress. However, it's important to note that my expertise is primarily focused on designing simple websites, such as portfolios or business card websites, similar to the example you can see here.
If you require a more complex website, like an e-commerce store or a specialized web service, you will need additional programming support. Just as a programmer may not provide high-quality design, a designer may not handle website coding. If promises are made to the contrary, the result may not meet expectations.