Hi there! Unfortunately, Elementor and other page builder technologies are notorious for slowing down sites due to bulking the site out with lots of unnecessary CSS and JS, on top of this these files are interlinked with dependencies which makes optimizing them very difficult and usually leads to issues with site functionality. I would suggest that you look into moving away from page builders, here is a great third-party resource that can help you with this: https://www.youtube.com/embed/hJyzyVqzH7Q