Note, you macros are not the %, they are targeted grams.
This is the tricky thing about satiety. People will endless say, “eat to satiety” but that is easy for some and meaningless to others. Especially when starting out. I’m sure you don’t purposely calorie restrict but it doesn’t mean you aren’t. If you have come from a CICO past and have eaten a certain way for a long time, then your mind and body may well be comfortable in the old habits (e.g. low calories), but this doesn’t mean it is what is best for your body. You may well have lowered your metabolic rate significantly through years of restriction and OMAD. You would be a pretty rare fish if 1400-2000 calories are enough to have a body your size do everything it should, especially at this stage of your adaptation or lack thereof.
Of course they are… any meal of 2000kcal is a big meal for anyone… and it will leave you full… but it still doesn’t mean it’s enough. That’s why I suggest getting off OMAD. It is not recommended for weight loss, more for maintenance. That Dr Jason Fung talking, not me (well, me as well).
The lean meats thing is not mandatory, but it is worth working on. It makes keto and getting sufficient energy much easier. You are working hard on it at too few calories, it would be much harder getting the energy you probably should. I agree about gristle (not fat) and flabby skin, which is why you bake/fry or whatever the buggers until they ARE crispy. I bake my salted chicken thighs in the oven so the skin is very crispy and they are lush! Find fatty things you CAN eat.
I’ll just interject my story, which is only my own but it is representative of a fair chunk of the obese people here. In starting my most recent attempt at traditional weight loss (4 years ago), I was your size and lost 75lbs through CICO and exercise in 9 months. I worked really hard - ate too little, cycled hard for 15-20 miles a day almost every day for months. The moment I stopped exercise, I put 35 lbs back on in 2 months even at the same calorie level. After that, nothing worked, I’d wrecked myself. Eating under my TDEE calories every day (which wasn’t that hard) didn’t work so I was stuck, 40lbs down but very obese and getting sicker, working hard to stay there. 6.5 months ago, I started keto and worked it… I ate more than I had in several years… and lost weight… lumpily but significantly, 50lbs in 5 months, though it took more than 6 weeks to lose anything beyond the water weight. It is counter-intuitive to eat tons of fat, eat more calories, don’t worry about the exercise, etc. but for many of the obese, this is exactly how it works. Do what you want but don’t let past failed strategies determine your future.