Faster plane: ie youre the better turner/opponent dives in high speed. Try for an overshoot. Get the fight slow and try to gain advantage by keeping the opponent busy. Try to change youre role from defender to agressor.
While a good idea in many other planes the 190 doesn't work like that unfortunatly.
Never get slow in a 190, and I mean NEVER unless you are very used to it. It is the worst turning fighter in the game and it doesn't have combat flaps. First notch of flaps extends at 170, at that speed you are already dead.
190's are tough SAS_KID, they are not beginners planes, they aren't even "average" pilot planes most of the time. While an avergae pilot may be able to zoom in and out of a fight getting some kills he will die right away when he loses his alt.
The fast roll rate doesn't help that much in AH, it is nice to have but don't expect it to get you out of situations against most planes.
Low speed scissors against planes that roll very slow at slow speeds (ie P47, P38 if engines aren't used to help roll, tiffie) can save you. But then comes the problem, everyone will outturn you and outfly you at slow speeds. Most planes wil be able to just throttle back, extend flaps and wait for you to stop scissoring or till they get snap shots at you.
People use stick stirring to survive in 190s (they use it in all planes but 190's do it extra well thanks to roll speed). Stick stirring is generally frowned up on and considered cheating so don't do it.
It is a tough plane to get away in, it accelerates poorly and it can't turn for S***. Once without speed you're a sitting duck.
Against zekes you can run (in the long run) make sure never to let them close. Against Yak 9U's you better be good, damn good if you wanna beat even a poor Yak 9 pilot. The Yak 9 holds all advantages except for roll rate but it rolls fast enough to give you troubles.