Welcome to live $1/$2
You’ll find out with time and experience that 1/2 plays vastly differently based on the players at that table that day. I’ve had rounds where I can fold for 45 minutes then open up UTG for $18 because I know I’m going to get 3-4 callers. Then there are other days where you limp every hand because you can outplay post flop. And then there are the days where no matter how correct you play, you lose because someone at the table is playing cards you would never think of playing in their position.
Sometimes $2/5 is no better
Mostly $1/2 is about knowing your opponents. Your thinking is at a higher level than theirs most of the time. Go with your gut. Fold when you think you should. You don’t have to win every pot