Oooh predicting this is going to become the next big thread with lots of strong opinions on all sides.
FWIW (1) - you can 100% eat 200 g of protein and lose weight - that's literally only 800 calories. Is it necessary? Most studies show you max out benefits at 0.7-0.8g per pound, and that's if you're trying to maximize muscle gain, which is incongruous with weight loss. It is critical to get sufficient protein to preserve / build muscle, but there is IMO an over-emphasis on protein in our "more is better" American culture. Carbs and fat are important too (unless you have a medical reason to minimize carbs), and too much protein crowds them out, and has diminishing returns.
FWIW (2) - as i've said on other threads, 500 calories is insanely low, obviously you can do as you wish but it is absolutely not necessary to eat that little to lose weight, and obviously completely unsustainable long term.
And to answer the actual question - I loosely track, I aim for 1200-1500 calories when aiming to lose ~0.5-1lb/week, and I aim for 80g of protein minimum. I'm female and already fairly lean, and also active (I won't do my whole spiel as to why I'm using GLP-1s, but the short version is I lost 70 pounds before these existed and am addressing some long-term hunger signaling / hormonal impacts of that weight loss and maintenance). I don't track anything else, except for occasionally i'll put it into MFP to check on vitamin / minerals and decide if I want to change my supplements.