The absolute simplest, bare bones answer to this is:

Start with 0.8-1g/protein per pound that you weigh (if you are very overweight, use your target bodyweight instead) and shoot for this every day

Fill in your remaining calories with however much carbs or fat that you want.

Fats are essential for many bodily functions including metabolism, brain function, and hormone production. For this reason, and despite decades of the low-fat dieting trend, fat calories are not "worse" than other calories. After your essential fatty acid needs are met in the diet, the remaining allocation for fat intake is largely determined by personal preference. A general rule of thumb and good starting point is 0.4g-0.5g/lb (0.9-1.1 g/kg) of total