WordPress UI & Chatbot Upgrade

My WordPress site needs a focused refresh that tackles two areas: First, I want the user-interaction experience to feel smoother. Please optimise loading speed across all templates and introduce tasteful interactive elements so pages respond instantly to clicks, taps and scrolls... (Budget: $30 - $250 USD, Jobs: Chatbot, Graphic Design, HTML, n8n, PHP, SEO, Social Media Marketing, Web Design, Web Development, WordPress)