I'm a relatively new player (1400 on chess.com, best game I won OTB was against a 1800) and I finished going through a tactics book. I still do tactics puzzles almost every day, but I realized I don't really "understand" the openings I play and I usually struggle strategically. I thought I would look at games with the openings that I play (Caro-Kann, London System, Ruy Lopez, Vienna, etc). I was wondering, is it better to look at games with a certain opening from only one player at first? For instance, I know Karpov played a lot of Caro-Kann and I really like his style of playing, so should I just go through games he played and try to understand the moves? Or would it be better to look at all Caro-Kann games? I'm a bit confused on what to do I must admit. At least for strategy I can read a book, but not so sure for openings.
EDIT: I'm asking the question because I'm afraid that studying only one player will make me miss some important theory or examples. Is that true or not?