High-Speed Landing Page Clone

I already have a finished design hosted on Graphy—see it here: https://yashskillhub.graphy.com/courses/Excel-Formula-Mastery-Top-10-Formulas-in-1-Hour--6a269ce4d4dda7e5d84a6ce2#. Unfortunately page-load performance is poor and it is costing me sales; mobile bounce is nearly 80 %... (Budget: ₹600 - ₹1500 INR, Jobs: CSS, HTML, JavaScript, PHP, Web Design, Web Development, Web Hosting, WordPress)