It's not possible to checkmate with just one piece. So when white "comes with the queen" don't worry about it.
Meanwhile develop some more pressure on d4 / the queenside. After your start generating threats white will have to give up on the attack, and you'll be a knight ahead, no compensation for your opponent.
I'm a beginner in the French Defense. I'm confused about the king-safety.
What if White decides to sac the horse on f7?
I know that the comp would say I'm winning, but... I'm no comp.
he soon comes with the queen...
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What would you suggest?
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p.s., the stucked bishop is Never a problem, so far.