Laravel Code Review & Optimization

I have an older Laravel site that I recently expanded with several new pages and features. The new pieces work, but the entire codebase now feels heavier than it should, so I need a fresh pair of expert eyes to review everything, tighten it up, and squeeze out every bit of speed... (Budget: $30 - $250 USD, Jobs: Asset Management, Backend Development, Git, HTML, Laravel, MySQL, PHP, Web Development)