well said todays horse.
if you are nifty with the throttle, then turn TC OFF, and you can power through the corners with a gentle drift
but this is hard too do for every corner
also there are different ways of tackling a corner, i.e. fast in, slow out, or slow in, fast out
also, you can late apex, early apex etc.
it is usually a natural thing, i mean, if i come to a new corner, i naturally find the right line and this is what most of the F1 drivers do.
sometimes they might try a different line, but usually the first line you ever take thru the corner will be the line you use for the rest of your career!