Forget the "playing style" shenanigans. At your level the only style anyone has is haging pieces, missing tactics, and not following opening principles. Just play over the moves. Dont worry if you dont understand the moves.
Youre just trying to see patterns, not understand the patterns.
But I disagree with the idea of playing through moves if you don't understand them. You should increase your understanding with every game you play through, so annotated games (such as, perhaps, the annotated games in The Most Instructive Games of Chess Ever Played) are ideal.
If we focus on "plays your preferred opening" (or similar) this is a pretty legitimate question and similar to what I have been wondering for a long time.
Conceptually, one of the big things I personally want to improve is long-term planning. However, it's hard to gauge these from moves without annotations. Maybe I'm just too lazy (haven't spent a lot of time on any particular game) at this.
The answer to the original question is different for different levels of play, but there are definitely more obvious and efficient ways to improve at tactics than vaguely looking for patterns in GM games. So the benefits of looking at random GM games are not clear at all.
Which is a bit of a shame because I need to follow current chess more, but I feel kind of directionless whenever I try. :P
Most study plans suggest spending time analyzing games from a grandmaster that shares your play style/plays your preferred opening, but I struggle to analyze the games myself, any tips?