Homepage Speed & Enquiry Form

I only want two quick wins on the site right now: speed-up the homepage and add a simple booking enquiry form—nothing else. 1. Image optimisation Please compress every homepage image, including the hero slider, and enable lazy-loading on them all... (Budget: $10 - $30 USD, Jobs: CSS, Google PageSpeed Insights, GTmetrix, HTML, JavaScript, PHP, Web Design, Web Development, Website Optimization, WordPress)