Setting up for next race

I am new here. I confuse about the driver comment. 
If Rear wing is 50 and diver say "it feels good" then I decrease and increase other, rear wing is the same 50 but driver not feels good with it now.
The question is 50 is the best for rear wing however I change other? or the last "it feels good" of that rear wing depends on other set up?

just change it according to driver comments... if it says feel good and you change something else and it doesnt feel good anymore, he's just reacting to the other thing you changed. sometimes you wont get it all to feel good.. but its ok

So if it's 2-3 feel good is ok, right?

yeah but obviously having all feel good is best

thank you