HOW TO BEAT THE FRENCH DEFENSE

There's a very good reason it isn't played by masters.
Very true... sort of.
This list of games under classical time control with both players >2500 is big. If we add rapid and blitz, it gets really huge...
What most top players employ is 3...dxe4 4.Bxe4 c5 5.Ne2 Nf6 6.Bf3 Nc6 7.Be3 cxd4 8.Nxd4 Ne5 9.Nc3 a6! 10.,Qe2 Nxf3+ 11.Qxf3 e5! which engines evaluate as approximately equal, but the position is rich, with plenty of play for both sides. And the O.P. certainly does not need to know theory that far.
Perhaps there should be some light coverage of 3.Bd3 Nc6!? in that video, but again, it is just what a post-beginner should know, or even more than that.

I have briefly checked all your rapid games featuring the French (or something looking like a French), and guess what? There was no early ...Qb6 in any one of them. And none of them was an advance French, as some posters here were assuming.
damn i guess i did all that for nothing then

Yes, if you master sharp lines it will significantly increase your elo until you plateau to a certain point. After that learn solid openings to increase your elo further.

"HOW TO BEAT THE FRENCH DEFENSE"
Play the main line:
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1. Black plays Winawer:
Your main attack against the Winawer is Qg4.
I'm a simple thinker - I normally play Qxg7, Qxh7, Q back to g7, and I push Harry to become a queen. (Harriete?)
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2. Black plays main line:
3. Black plays Rubinstein:
Play the Exchange var and wait till they blunder in-between naps. That's what people did when I played the French ...
I have briefly checked all your rapid games featuring the French (or something looking like a French), and guess what? There was no early ...Qb6 in any one of them. And none of them was an advance French, as some posters here were assuming.
Anyway, I think that while your main concern should be the numerous tactical oversights you make in the game, to apply something simple, clear-cut and not so theoretical. Take for example the rather rare 3.Bd3 variation- I think the following video presents all you have to know abut it (or even, more than you could need right now).
https://youtu.be/vvgyBt3ZFYQ