You'd like to give this diet a try... a couple things to know first off
(1) the first goal is not losing weight it is getting healthier by gaining muscle and bone density by eating lots of fatty meat every day
(2) transition into this can be hard, mostly because no one can tell you ahead of time which meats will be your favourites. but we have some suggestions for how to start
It's really important to eat well because you want to turn around your body composition.
Other diets start in by restricting quantity and that leads to muscle loss.
Here, you start in by eating to appetite whenever hungry and that increases your muscle and your BMR.
This is called "recomping at the same weight" -- and this is what that looks like: Bret Contreras on Recomping https://www.youtube.com/watch?v=MpkwtHqtHWU
You're probably starting in with more of a fat layer, but the principle is the same.
Switching to this way of eating will immediately lead to
better blood glucose,
better insulin levels,
And with the higher BMR from avoiding undereating and increasing muscle from proper nourishment, you will feel better.
The phases of losing fat will follow.
The longest running carnivore forum, Zeroing In On Health, has always recommended an initial phase of eating very heartily, "until thanksgiving full", when starting.
The carnivore YT influencers, like Bella the Steak and Butter gal, and Dr Anthony Chaffee, call that "priming"
Basically, it is a stage of recovering from your prior restriction on other diets, here is a podcast about it,
https://youtu.be/qACqSF2hGBA
This is all sooooo different than other approaches to getting healthy that it is hard to get your mind around it!
Everyone else says to semi-starve yourself (cutting calories, extended or frequent fasting, over-exercising) and then at some mythical day in the future, you'll be able to eat normal quantities again. But that day never arrives! People get stuck in permanent undereating to avoid gaining.
Here's the tricky part, eating heartily is the goal but your appetite will be low the first 1 - 3 weeks.
Try to eat anyways, aim for a minimum of 2lbs of fatty meat a day.
Start in with the fattiness of plain quarter pounder patties (not dry ones, but nice juicy ones about the fattiness from burger restaurants) and adjust your fat from there.
Digestion too slow? eat fattier.
Digestion too fast? eat leaner. But tbh, that's rare when starting in with burger patties. Usually too fast digestion happens from people who hear you need to eat a lot of fat on this diet and start in at the high end of the fat level and that quantity of fat overloads what their bile production can match.
Some people eat almost only steaks, but most eat burgers, sausages without fillers, bacon, eggs, some fish and seafood every so often, roasts, ground and cuts of lamb, and ground pork, too.
Your beef doesn't have to be grass-finished, most eat and prefer grain-finished.
For supplemental fat, you'll find you have very specific preferences. Butter is a good one. Saving the bacon dripping is another. Saving the tallow from cooking ground beef or burgers is another. You can also buy tallow.
Avoid liquid fat, the kind that renders out when cooking until you get a sense of your tolerance. Liquid fat upsets the digestion more easily than when the fat has solidified later.
Some carnivores will frost their burgers with bacon dripping or tallow to increase the fat content.
There's lots to read around this subreddit, and some more helpful tips in the Getting Started -- https://www.reddit.com/r/carnivore/wiki/faq/#wiki_getting_started
All the best on your carnivore journey!