My quadcopter isnt stable , :(

[unmannedtech1]

Sounds like it could be a bad PID values, we have e some details on PID tuning over on the cc3d guide

CC3D Flight Controller Guide

The CC3D is a powerful and affordable flight controller that is very popular to use mainly on miniquad copters due to its small form factor. It has many advanced features that you can use if you add a GPS module, even waypoint based flight,. However, most users don’t bother with this for mini quadcopters and just want the basic setup. This post will provide some links and comments to some of the better CC3D setup guides that we have found on the internet. If you have made one, or know of a gr…

Otherwise if you can give some more details of the motors and ESC and best of you can show a video of the flight so we can try to help