#22 that is interesting but I don't think that helps me since I have never tried it out
Caro-Kann: Exchange Variation

I guess I could try it out
I wouldn’t try it because I think the Queen move showed by other player is to early.
It doesn’t seem worth it to move Queen in that position.
The above moves is like the standard moves good players would play or players who admire Bobby Fischer because Bobby Fischer used to play this position as White.
All the moves make sense and are perfectly logical.
Kings Pawn lines 1…e5 & Sicilian lines 1…c5 aim to prevent White from playing 2.d4. They have a strategy around making it hard for White to play d4.
The Caro Khan lines 1…c6, French lines 1…e6, & Scandy lines 1…d5 aim to take out White E pawn. They don’t stop white from playing d4, but instead make strategy against E pawn.
The above explanation is basically the reason behind the beginning pawn moves.
Black c6 + d5 moves are attacking e4. You can see it.
White can push, exchange, sacrifice, or maintain the pawn by defending it.
They chose to exchange it which reaches the above position.
White Bishop move defends the c4 & mainly the e4 squares which the Black d5 pawn is attacking.
Black Knight move attacks the d4 pawn which lost its defender (Queen) due to Bishop moving in front of the Queen.
If you wanted to play Qc7 line, it would probably be better on move 5.
I don’t play the Qc7 line, but you can see I play the other lines.
Black main goal is to play on Queen side with minority attack which is a good plan because it helps Black swing around to enemy White King from right side.
White main goal is to play on King side with Ne5 + f4 + even g4 pawn push at times. It can be scary to face against.
The g6 line for Black can help Black defend better because they have another defender around the King