in sicilian defense, why 2...d6 is played?

I'm a beginner and recently I've started learning Sicilian defense.
I wanna know the purpose of this move.

dont play sicillian as beginner

@Akarsh_2010 said in #2:
> dont play sicillian as beginner
Avtually good thing it is too complicated for u.

@Great-Zhifu said in #3:
> @Akarsh_2010 said in #2:
>
> dont play sicillian as beginner
>
> Avtually good thing it is too complicated for u.
yes that is why dont play it.

Sicilian was first opening i learnt as a beginner . Its a good opening to learn . 2 d6 according to my knowledge , is played because you want to control center and provoke d4 since you will have extra central pawn .

if you do not want to play complicated positions how will you improve ? Sicilian dragon was the first opening i learnt and i still play it , i do not regret it . #4

@TalMagicalDragon said in #5:
> Sicilian was first opening i learnt as a beginner . Its a good opening to learn . 2 d6 according to my knowledge , is played because you want to control center and provoke d4 since you will have extra central pawn .

so d6 has the potential to play e5 ,right?

With 2...d6 the d pawn controls the e5 square and defends the c5 pawn, and you also extend the scope of your light squared bishop and your queen.

The benefits of this move :
1. Protect the c5 pown
2. Control e5
3. Activate the bishop
4. Give space for the knight

@TalMagicalDragon said in #6:
> if you do not want to play complicated positions how will you improve ? Sicilian dragon was the first opening i learnt and i still play it , i do not regret it . #4

thanks a lot for your kind replies.
yeah, I can't say I can play complicated openings but I still wanna practice and get better anyways.