If u want to enjoy chess again, I would suggest forget all opening theory. Play wonky openings like the dutch, etc, so the positions are different, unbalanced in terms of whats on the board, position etc, and don't create pawn structures that force u into closed games, like as you already pointed out the french. I usually play the Queens Gambit as white, and most of those games are closed but I find those entertaining.
Just either forget all opening theory and play whatever u feel like, or only study openings that lead to wide open positions, like Sicilians for black if u face e4,
I agree with learning something different like the Dutch. I've had some great games using it.
Watch YouTube Chessbase and.Fritz GUI tutorial. Using them are easier than you thought.