I guess I will play up in my next tournament, and by drawmongering I should get an advantage, then I will suddenly turn into an optimist only then.
An opponent 200 points below me was a drawmonger

My weak pawns compensate for the queenside pressure, so thus, equal. Totally equal. So is my only option to go for the Yugoslav and hope that I checkmate him first? Today, the Yugo is known as better for white.
I didn't look through your game, but I'll give you a general piece of advice: It's not about the opening, it's about the endgame. You will often run across opponents who just want a draw with white, and they'll seek to exchange pieces and go into an endgame. And then it's your job to grind out a win in that endgame. Everyone has to deal with this in Swiss tournaments, up to and including GMs. You have to learn to play equal endgames for a win. You can't always force a sharp game.

Look at the mirror. Sounds like you allowed the draw to happen. You can only blame yourself on chess.

3 game mentalities:
1. Winboard
Trying to win at any cost
Example: Fischer
2. Optimist
Playing for the best result you think is justified
Example: Carlsen
3. Drawmonger
Example: No one becomes a grandmaster by drawmongering!
Lies, just look at Anish Giri!
If you want to learn and improve, the first step is learning to absorb constructive criticism and using it to work on your game. Multiple people have spent time giving you suggestions, and your responses to everyone have been defensive.

I was one of the top player in the Continental Class Championship's B section. On the first round, I played a 1590 and I was a 1761. I had black, and wanted to win so I pulled out the ultra sharp Sicilica. My opponent prepared a Yugoslav, and I thwarted his intentions with a counter in the center, d5. But then, my opponent started trading all the pieces and offered me draws like crazy, nearly every move. I refused all of them, but my opponent forced a totally drawn rook ending, 4 vs 3 and outside passer for opponent. I even almost lost due to overpushing, but my opponent offered a draw in a theoretically won rook endgame! I could almost see the Lucena for him, right on the board, and he still wanted a draw. I accepted, of course. I am disgusted with Davids totally playing for draws like this.
The game was eventually drawn, of course. Any advice to help combat drawmongers?
A surefire way to deny him the draw is to resign.
I try to draw when I am losing, and, when that works, I have won a whole lot of games from people trying to avoid forced draws. Like they will play a couple of repetitions ij response to checks, and then play a losing move so as to not draw.