How to find the best move in chess?

There are many different ways in which people find moves. How do higher rated grandmaster actually find the strongest moves, and crush their opponent bit by bit? 

looking and calculating for the best moves in the position? how else? they probably calculate the most natural looking moves first

If it's about calculation, majority of people over elo 1500 can play like grandmasters.

Not how it works, a 1500 player will calculate very few moves ahead in a position while a top GM will probably calculate very deep lines with different moves in a position, hence the stronger the player. Also, since they have studied, analyzed and played thousands of games they probably have some kind of instinct that helps them determine which move is stronger than others in different positions.

That isn't how grandmasters calculate. Even they don't always calculate 15 lines into the move.

They have certain principals to determine the best move. Search for YouTube videos if you want to understand the concept.

I said that in both of my replies. It’s a mix of both, they look for the top candidate moves in a position which are mainly referred to as “natural looking moves” and calculate from that. Higher rated GM’s will have an instinct that will help them determine these top candidate moves.

Bro then why hikaru can't win against magnus carlsen?!? It's not all about calculation. Just calculating deeply wouldn't provide the solution.

Because like I previously said, these players have an intuition that will help them determine the better moves in a position and Magnus probably has a better instinct at spotting these than Hikaru. At the end of the day chess is all about calculation and having a deep understanding of positional advantage/tactics. These build up with time spent studying, analyzing and playing the game.

Grandmasters don’t win through calculating. They win because they understand the positional themes in the position better than their opponent. They keep improving their position until there is eventually a concrete series of moves that wins.

There was an early study of this, back in the mid-1900s. A psychologist gave positions to players of different strengths, had them analyze the positions aloud, and recorded their analyses. One of the surprising findings was that masters did not look more moves ahead than nonmasters. Instead, they selected better moves from the start. Their candidate moves were stronger. Why? They recognized the key aspects of the position. 

another feature of the thinking of masters was what the researcher called progressive deepening. The masters kept returning to a move to try to make it work. They recognized the key move and kept considering different sequences to make it work. 

I think it was Capablanca who said, I only look one move ahead—the best move.

@1

"How do higher rated grandmaster actually find the strongest moves"
++ They usually consider 3 candidate moves, calculate, and then decide.
When it is opponent's turn, they make general considerations: where do pieces belong, what trades to aim for or to avoid, what pawn moves to aim for or to avoid...

"crush their opponent" ++ Wait for a mistake and then exploit it.

"Finding the best move" is over-rated.

Even PLAYING the best move will do you no good if your NEXT move is a mistake.

Much more useful is finding the correct plan. Or at least... A correct plan.

Read my posts #4, 7-to-10 and especially 12. Then play over the three sample games.

GM Larry Evans' method of static analysis - Chess Forums - Chess.com

Wow, that's insightful to know. Thank you!

It involves a combination of strategic understanding, calculation, pattern recognition and intuition.

Bro you really are a demotivated person. Hardwork can beat talent.