There are no nutrients that are exclusively available via meat/dairy. The only thing you might miss out on is B12, but that’s usually supplemented in a lot of the vegan substitutes/junk food alternatives already. Anything else you’ll get pretty easily by simply eating your regular veggies, beans, legumes etc.
If you truly care about nutrients, then get your blood tested and have them check what you are actually lacking, and then adjust or supplement your diet accordingly. Chances are that you are already low on something even when eating animal products.













Could it just be the reflections of ambient noise you also get when you hold your ear close to any surface? The old “If you hold a seashell to your ear, you can hear the ocean” kind of thing.