if u r really suck n have no confidence, here's the tips.if u play defend, clear it as fast as u can.u see ball comin, u kick to the front.
If u play striker/front, just shoot toward the goal as soon as u got the ball.
when u get used to it then u can make progress slowly...watch teammates then pass.
Not a good advice but at least u can contribute to ur team rather than let the ball get stolen away, unless u have times to do proper practices, i bet u dont.