If you want to calculate like grandmaster and want to do a brilliant move then the points you need to take care are-
• You need to calculate 5 to 6 different possibilities and what will you do if it happens.
• You need to sacrifice
• If you can't win then try not to lose, because stalemate is possible.
• When your king have no place to move and you are less in materials then sacrifice all your pieces
• If you attack then you can trade but if your opponent attacks then never trade.
• Castle as early as possible
• Never trade an developed piece with opponent's undeveloped piece
• As your pawn goes up it become more difficult to protect it
• King side castling is safer than queen side castling.
• Don't give check if not necessary
Thank You
I think this tips are useful to you