Urgent WordPress UI Fix & Redesign

My WordPress website has malfunctioned after changing the theme. I urgently need a user interface expert to help. He needs to intervene today to solve the display issues and redesign the key pages to give them a simple and clean appearance.
Currently, I have found a reference website that uses the same template as mine. Therefore, for the initial quick UI interface repair, I hope it won't take too much time. Since there is still design involved, this is a very simple website and doesn't require many functions. It's just a display website. The design should be professional and look like a professional enterprise website. So, in addition to seeking someone with professional and extensive experience in the industry, I also need someone who fully understands what a commercial website used for promotion and display should have, including functions, which pages, etc. After all, I'm not a professional. I hope to get help in this regard.
Another requirement is that I need an expert who has the time to start working immediately and can respond at any time. I highly value efficiency and friendly communication, as this will ensure effective collaboration. I hope to collaborate with individual experts. I believe that individual experts are more responsible and work more diligently. Of course, I don't mind if you are from a company or a team.

When applying for the project, please bring me the best of your previous works that are in line with the style of my website so that I can have a look at them. And we will also provide you with your sincere hourly rate. We will get back to you as soon as possible to reach an agreement. Thank you all.