What to do in Middle games?

1. Piece Activity and Coordination
Keep your pieces active, especially in the center. Centralized pieces control more squares and are better positioned for both offense and defense. Ensure that your pieces are working together and supporting one another to create threats and opportunities.
2. Control the Center
Maintain control of the center of the board, especially the key squares d4, d5, e4, and e5. This gives your pieces freedom to move and limits your opponent’s options. Use pawns and pieces to control and fight for central squares, as this is crucial for success in the middlegame.
3. Identify Weaknesses in the Position
Look for weak pawns, exposed kings, or uncoordinated pieces. Weaknesses are opportunities — whether you’re attacking them or creating them in your opponent’s camp. Focus on exploiting these weaknesses through tactical themes like forks, pins, or attacks on backward pawns.
4. Launch Attacks and Create Threats
If you find an opening, launch an attack on your opponent's king or key weaknesses. Coordinate your pieces — especially your queen, rooks, and knights — to build pressure. Sometimes a sacrifice or a surprise move can break open the position in your favor.
5. Don’t Neglect Defense
While attacking is important, never forget to defend your own position. Be mindful of your king’s safety and be ready to react to any threats your opponent creates. Use your pieces to defend key squares and avoid overextending your pawns or leaving weaknesses in your structure.
 
By focusing on these five points — piece activity, center control, exploiting weaknesses, creating threats, and solid defense — you'll improve your middlegame and increase your chances of winning.