Website Speed & SEO Optimization

My site https://vlugverhuizen.nl/ is dragging its feet and Google PageSpeed Insights confirms it. Loading feels heavy on the home page, all service-detail pages and even the contact page, and every extra second is costing me both visitors and search-engine traction... (Budget: €30 - €250 EUR, Jobs: HTML, PHP, SEO, Web Design, Web Development, Web Security, Website Optimization, WordPress)