what is the best chess strategy

I'm new to chess and I want to know what the best strategy is. So please help figure it out please. 

Theres no best strategy. If your new first secure your king by castling, next secure center four squares as much as possible, try to develop your power pieces to active squares, move check before you move, where does this piece go? Finally attack the other players king or look to pin or attack their pieces.

He asks for "strategy" and you start naming openings...

Players at the lower ranks seem to think that "a new opening" is a cure for bad play.

You keep leaving your pieces where they can be captured? Learn a new opening!

You keep blundering because you move too fast? Learn a new opening!

Your dog died? Learn a new opening!

Strategy:

Your King's safety is paramount. Hide your King away and defend it.

The center of the board assumes the same role in chess that a hill-top position plays in war. Try to occupy the center, but only with pieces that are solidly defended.

Pawns are important. They form the "terrain" of the game, and the Pawn structure determines where the pieces can be effectively posted and which side of the board you should play on.

Try to keep all of your pieces guarded. An undefended piece can serve as a target for your opponent's play.

The Framework

1. Learn core principles.

2. Apply them in slow games.

3. Analyze your decisions afterward.

This is the framework I use with students I coach.

Here are the core principles:

• The Principle of Activity & Material: These are the two pillars of chess. You must constantly strive to increase the activity of your pieces while capturing material whenever it is freely given.

• The Principle of the Least Active Piece: When you aren't sure what to play, identify your "worst" piece and improve its position. This is the secret to consistent positional play.

• The Principle of Attack: Attacking moves are superior because they force the opponent to react. Prioritize calculating Forcing Moves (Checks, Captures, and Threats) before anything else.

• Maximum Activity: Place your pieces as forward as possible to restrict your opponent.

• Keeping the Tension: Do not release the tension (exchange pieces/pawns) unless it gives you a concrete advantage. Releasing tension often helps the opponent free their game.

• The Principle of the Center: Centralization is the most efficient way to dominate the board.

• Neutralization: If an opponent has an active piece on your territory, your immediate priority is to attack it, force it back, or exchange it.

• The 3 Opening Tasks: 1) Develop pieces, 2) Castle, 3) Connect rooks.

• Endgame Strategy: In the endgame, the logic changes: Activate your King, advance passed pawns, and attack opponent's weak pawns.

Your "strategy" is to ask yourself before making a move if any of your pieces can be taken by your opponent (a blunder check), and then checking to see if any of your opponents pieces are loose and able to be captured.

If you are under 1000 rating, your games aren't going to be won or lost by strategy. They are going to be lost by whoever hangs the most pieces, and whoever disregards the most basic principles - fighting to control the center, developing your minor pieces efficiently, castling by move 10 and sliding your rooks to the center files to help support the center.

Once you mostly stop blundering and have the board vision to take advantage of your opponent's blunders, you'll get past 1000 and then you'll be ready to start thinking about strategy.

- ALWAYS pay attention to your opponents moves, starting from move one.

- When the opponent moves, check if he is threatening something, and if he has left something undefended.

- When you have the move, check if your intended move leaves something undefended, and if your piece is safe at the landing square.

Of course there are many more things, but these are the main ones for starters.

There's really no good answer to such a broad question. Trial and error are how people start making progress, but it requires that someone has the staying power to keep going loss after loss until what not to do sinks in.

Your strategy in chess depends on whether you are playing blitz or longer time controls (often called rapid). Let’s focus on blitz games (three minutes or less). In blitz, the best approach is to trust your intuition and avoid overthinking. Let pattern recognition at the subconscious level guide your moves. When applying pressure, avoid moves that clearly reveal your final plan or trap. The more you keep your intentions hidden, the more likely your opponent is to make mistakes.

As said before, there is no one strategy. 
Play slow games, lose and try to figure out why. 
Also find a good chess channel on Youtube to follow (other than Levy) or - better - read a chess book for beginners.

Improving Your Chess - Resources for Beginners and Beyond.....

https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond