If building a full-width site with the Twenty Twenty-Two theme feels tricky, you might want to explore more flexible, full-width-friendly themes like Kadence or GeneratePress. They’re lightweight, responsive, and great for custom layouts. You could also use a page builder like Elementor for easier design control, but be mindful of speed.
If you stick with Twenty Twenty-Two, try using Full Site Editing (FSE) and tweaking block settings, but some CSS might still be needed. For speed, optimize images and use a caching plugin like WP Rocket.
Check out my own site, costcofoodcourtmenu.com, for inspiration!