how tf do you get enough fat in your diet when in a big deficit?

[Carnivore]

Some people on the forum mentioned that 20-25g of fat a day was too little. I asked chatGPT 4 and it agreed and recommended 50g of fat a day. When I eat healthy 1500kcal da day I usually just end up with 20-25g of fat, which leaves me good room for carbs. I had to replace sweet potatos with 85% dark chocolate and pretty much destroyed my daily carb intake