Boost WordPress website Loading Speed and fix PageSpeed Insight issues

I’m reviewing the site’s performance in PageSpeed Insights, and the current WordPress setup still feels sluggish even after the manual optimizations already applied. The slowdown is most noticeable on the homepage and key product/service pages... (Budget: ₹1500 - ₹12500 INR, Jobs: CSS, Database Management, HTML, MySQL, Performance Tuning, PHP, Web Design, Web Development, Website Optimization, WordPress)