600 Guys Hang Pieces
Okay so being a 1000 elo,, many players hang pieces here too but the amount of hanging pieces is low. and it gradually decreases as ur rating increases, including the inaccuracies,miss , mistakes and blunders,. Positional inaccuracies is a thing that is not capable for us, yet but that's pretty understandable for players about 1700 or even 1650....my advice will be Play each and every moves carefully calculating what your opponent needs and what are the advantages and disadvantages ur move can lead ur opponent to... Play each and every moves by keeping an eye over ur minor pieces if they are in a hanging position or not..Don't let ur bishops or knights in an outskirt because later it becomes difficult for players to bring it back and it gradually gets trapped. Enjoy the game :)
I recommend puzzles if you are struggling, puzzles are perfect for this.
What Yao_Wang said in #2. You dont follow every piece of your opponent. You follow the moves and with each move you check what changed.
Also you follow Bobby Fischers example and think on your opponents time, allowing you to study the position with more depth.
Up to about rating 1000 games are pretty much exclusively decided by tactics. The main weapon to learn tactics is to get a massive concentrated dose of them by solving puzzles.
Use the simple checklist: checks, captures, attacks. Always look at moves you can make that check the opponent's king, then look at any piece you can capture on the board, then look for other tactics, ideas, attacks.
When you are thinking of moving your piece to a square, pause and force yourself to look if any your opponent's pieces can attack that square. Count the numbers of attackers and defenders on each side.

Well, we, 600s usually hang and blunder pieces. The problem is, we don't see it. Not only our own blunders or mistakes, but also our opponent's ones. So the one who commits the last blunder loses, right? How can I spot blunders? Not only mine, but also my opponent's?