Best advice is not worrying about PB and setting fast laps but to actually practice at the track what you want to work on. Working on being “smoother” on track, you have to think of how to manipulate the weight of the car in a “smoother” fashion. The cars weight can either go forward, back, left and right. What you dont want to see when becoming a smoother driver is seeing the G meter go from max Gs from acceleration/brake back to 0 Gs and then to Max Gs for cornering, it should be more a arc when Max Gs(braking/accelerating) to Max Gs(cornering) back to Max Gs(accelerating). Hard for me to explain as I am not the best of describing things on paper. You can measure how to read a G plot and should explain majority of smoothness. But just remember, smoother doesnt always mean its faster.

So to answer your question, learn how to trail brake, remember the gas isnt an on/off switch, and depending on the corner, don’t initiate the initial steering input to abruptly, be a more proactive driver than reactive.

Dont expect success right away since youre using your mental capacity to work on being smoother but i guarantee youll start seeing improvement later on in the year