How to counter the Dragon?

I mean, I ussualy destroy players at my level or a bit higher rated who play the Dragon in daily(Maybe because I spend more time than them), but in live is about 50%-50%.Also, @Danny-BOT (2500) always played this against me and crushes me all the time.

Here are some of my best daily games in this variation(for onknown reasosn I won't post any defeats): 

So I think I have few problems on flank attacks, but I don't know very good how to prevent ...d5 or how to continue after it's played.

Ce frumos! 

Felicitări!

@1
"I don't know very good how to prevent ...d5"
++ Bc4 is to prevent ...d5.

I know, but then ...Na5

Ah, thank you.I saw that once, but I forgot about it.

Castle long, swap dark-squared bishops + sac for the checkmate! Yugoslav attack ftw

Be2 or Bb3 is ok. If ...Nxb3 then cxb3! generally offers good protection (Fischer).

Alright, thank you every one, very good advices!

There is another solution as well. In case you don't enjoy playing open Sicilians as white, you can play some anti Sicilian like 2.c3 or 2.Nf3 3. Bb5+ against 2. ...d6, or even something like closed Sicilian. If you like open Sicilians as white, then disregard everything I've said here.

@9
Even Qe2 is possible
https://www.chessgames.com/perl/chessgame?gid=1044000 

this is a good line

11...Nxd4 wins a piece. 

White needs to play Bb3 first. 

11. Bb3...Ne5 12.g4 is still not so great for White after 12...b5!

White should play h4 or Kb1 instead.