Fix image quality issue on our WordPress site (we have hi-res photos ready)

Hey! We run a small luxury handbag brand (hoflore.com), built on WordPress + Elementor + WooCommerce. We just did a professional photoshoot and the images look great on our end, but once they go up on the site they come out looking soft/compressed — not the quality we're paying for. We need someone who actually knows WordPress image handling to figure out why this is happening (could be image scaling settings, a compression plugin, Elementor's image sizes, hosting/CDN settings, etc.) and fix it properly — not just re-upload a couple photos as a band-aid. We'll hand over the original high-res files once you're on board. If you've dealt with this exact kind of thing before, tell me briefly what usually causes it, that'll help us pick the right person.