WordPress Custom Template Enhancement: UI/UX, Graphic Design, & Core SEO

I'm seeking a Web Designer/Developer to enhance my existing WordPress website, www.ngntechhub.com. It's built with a custom WordPress theme and hosted on Bluehost. While functional, I know it needs a professional web designer/developer to touch to improve its look and attract more traffic.
My primary goals for this project are:
Improved Graphic Design & Visual Appeal: Make the site look more modern, professional, and engaging.
Enhanced User Interface (UI) & User Experience (UX): Make the site easier to use and navigate for visitors.
Basic On-Page SEO Improvement: Implement fundamental SEO practices to help attract more organic traffic.
I'm not a Frontend developer, so I need someone capable of working with my custom WordPress theme and implementing these changes directly.
With a budget ranging from 50€ to 100€, I'm looking for the most impactful improvements you can provide. Please propose what you can realistically deliver, specifically outlining:
A professional review of ngntechhub.com, identifying critical areas for improvement across graphic design, UI/UX, and on-page SEO.
A clear, prioritized report detailing actionable recommendations.
Crucially, direct implementation of the top page (Home, about, blog, contacts, services) improvements identified in the audit that fit within the budget (e.g., optimizing critical page elements for better visuals/usability, or refining core meta data for key pages).