Redesign of FM services website

I am looking to redesign and modernise my existing services website, which is built on WordPress and hosted through SiteGround.
The aim is to create a modern, professional, visually appealing website that clearly communicates my services, improves the user experience, and makes it easier for potential clients to find information and get in touch.
I would like to retain WordPress as the website platform while improving the overall design, layout, navigation, and functionality.

1. Website Redesign
Modernise the existing website with a clean, professional, contemporary design.
Improve the layout, typography, colours, imagery, and overall visual consistency.
Ensure the website is fully responsive and works seamlessly across desktop, tablet, and mobile devices.
Improve navigation and make key information easy to find.
2. Additional Pages
Create new pages for specific services and other relevant information.
Develop clear, well-structured page layouts that showcase each service effectively.
Ensure consistency in design and branding across all pages.
Improve calls to action to encourage enquiries and potential client conversions.
3. User Experience & Functionality
Simplify the website structure and improve the visitor journey.
Review existing functionality and recommend improvements where appropriate.
Ensure contact forms and enquiry routes work correctly.
Make the website easy for me to update and maintain independently.
4. SEO & Performance
Preserve existing SEO value wherever possible.
Review page titles, headings, URLs, metadata, and internal linking.
Improve website speed and performance where practical.
Ensure the website follows SEO-friendly design and development practices.
5. WordPress & SiteGround Compatibility
Work within my existing WordPress installation and SiteGround hosting environment.
Review the current theme, plugins, and setup before recommending significant changes.
Ensure the redesigned website remains secure, stable, and compatible with the existing hosting environment.
Provide a backup before making significant changes.

want a modern, professional, easy-to-navigate website that reflects the quality of my services, builds trust with visitors, and generates more enquiries.
I am looking for someone who can review the existing website, suggest improvements, implement the redesign, and create the additional pages required.
Please include examples of previous WordPress redesign projects, your recommended approach, estimated timescale, and a breakdown of costs.
The existing website is built on WordPress and hosted by SiteGround.