pls tell alternatives of seervo or how could i control roll pitch yaw of a plane without servos
The obvious question is why do you want to do this ?
In all of the planes I controlled the pitch / roll / yaw was controlled by cables attached to the control column / yoke / rudder pedals. Seemed to work OK without servos (although they we're kinda nice to have on the autopilots).
But something has to move the cables. In the case of the vast majority of GA aircraft that is done directly by the pilot moving the control column/yoke and rudder pedals. If you were determined to you could arrange for the control column/yoke and rudder pedals of a model to be moved by servos in the absence of a pilot but would be the purpose ?
Absolutely.
Who mentioned models? 
Its implied in the use of a hobby controller such as the Arduino.
What device are you trying to make fly ?
I was attempting to deliver a subtle lesson to the OP on the needs and benefits of taking the time - and making a little more of an effort - to communicate their information a little more accurately and completely.
None; The high-performance aircraft I flew all flew just fine with me strapped securely into the cockpit at the sharp end - and the high-performance RC helicopters that I controlled flew just fine with the stump-pulling servos attached to the swash plate 
How about having fans, one blowing on the top / left of a spring loaded control surface and one blowing on the bottom / right of the surface. Or even forget the control surfaces and just have fans at the tail end, up / down for pitch, left /right for yaw then a fan on the end of each wing for roll. It would be heavy, inefficient and probably only work at slow speeds if at all but at least there are no servos.
Of course if you said what sort of plane you mean and WHY you don't want to use the obvious solution you might get some better ideas.
Pyrotechnics
Move weights around to change the center of gravity.
Use reaction wheels to generate torque.
Pressurize the control surfaces to alter the aerofoil shape.
Fire a megawatt laser at the ground and use the plume of rising hot air to generate lift.
Block out the sun with a giant umbrella like in the Simpsons episode and use the temperature differential to control the wind speed and direction. https://youtu.be/L3LbxDZRgA4?t=39
Use an electric arc to heat the air in front of the wing thus reducing its density and reducing lift.
But don't use servos to move the weights 
arduino and bunch of cardboard
well u cant control the angle by using pyrotechnics
Why do get the feeling this isn't a serious question ?
Robert
Before servos, some radio control aircraft used escapements (google bonner escapement for examples). Did not provide any sort of proportional control, only full throw in one direction, neutral, and full throw in the opposite direction.
If I ‘had to’ work without servos, I’d look at scaling a set of pumps to move liquid rapidly between reservoirs.
The answer depends a lot on whether the OP is referring to the standard hobby type servo, or the much broader definition of just about any mechanism that uses feedback for positional control.
Billions of drones seem to do OK without servos.
But is a multi rotor "drone" a 'plane ?
Somewhere on the Web, you should be able to find a description of the firing sequence and guidance of the TOW missile.
Squibs feature prominently, though I think the steering was primarily pneumatic, powered by helium.
Quite a few guided shell proposals (and some of the "smart pebble" space weapon designs) use pyros to steer.
Edit: Here you go. The sequence description starts on page 16. I used to have the manual for the original system, which had a much better description of the analogue guidance signals and how they affected the control surfaces - basically a kind of aerodynamic PWM, where the surfaces simply continuously slammed from one extreme to the other, and the difference of how long they spent at each extreme determined the average direction. Too much control input from the operator could exhaust the gas supply before the weapon reached the target.