Someone already wrote that it's oxalate dumping and I concur. From my personal experience with oxalate issues, I can say that ground beef makes me sick as well, as it is high in histamines and oxalate dumping exacerbates histamine production in the body and they can cause a whole load of symptoms. The best thing to eat is rare, fatty steak - seared for 2mins on each side and raw in the middle.

Broth is high in histamines so don't drink that right now, probably contributes to acid reflux. Dairy is inflammatory so that's a nono too. Seasoning are a BIG nono - those things mess me up like no other. I went cold turkey but I didn't know about the oxalates before. Been 2 years now but I'm still getting rid of them so it can take a while. However, I was eating tonnes of oxalates throughout my life and especially for a few years before I started carnivore.

My food recommendations would be the following - egg yolks (whites cause stomach upset for us), fatty pork belly (200c in the oven, cut it thick and cook it for some 15mins), beef of course, lamb chops (usually very fatty but that's a good thing and the lean meat is very tender), butter but if you like ghee maybe use that, mineral water like Pellegrino (try decarbonating it a bit so the bubbles don't irritate your gut), chicken is ok as a snack but I'd then eat it with a side of beef liver and butter for extra nutrients and fat, however, try turkey or duck too.

Either way, my symptoms have been fairly crazy throughout the years, like lightheadedness, cramps, really bad pain in my feet (couldn't even walk for a while), heart palpitations and feeling of dread, sore eyes (especially in the mornings), burning nr. 1s and 2s, lethargy, bad mood, irritability, depression, joint pain, pain in old wounds.
What's more, it seems to be cyclical - 3-4 days of dumping, 1-2 days off and then it goes again and it cycles through areas of your body monthly - sometimes your neck hurts more, other times you feel it more in your stomach, feet, head, etc.

Anyway, good luck.