Many of my students seem to learn faster when I use "cue" words and imagery. Try this and see if it helps your game.
When hitting topspin groundstrokes think, "brush up." When hitting volleys, think "pull," "carve," "outside in," or "high to low." On serves and overheads, think "reach up" and "flick" (flick referring to your wrist snap) On returning very offensive serves, think, "block." When you are standing near the net, picture your opponent hitting the ball over your head. When you are on the baseline, picture the next ball-landing short in front of you. When approaching the net and you are in the mid-court, picture the next ball landing at your feet. When you see your opponent's racquet set up high for an overhead or high volley, picture yourself as the "target," move back, and defend. When you hit a ball low at your opponent's feet, picture yourself moving in to attack the weak high ball. When you receive a low volley, think, "V-Volley" (keeping your racquet head up stopping the racquet from twisting out of your hand).
On first serves, think, "hammer." On second serves, think, "hit up" or "brush up." Picture yourself as a "cat," improve your footwork and stay on your toes. Moving your head too much causes most "miss-hits." Picture a full glass of water on your head and try not to spill any as you strike the ball.
Picture your partner looking at you after they have just missed a shot, with a negative expression or negative body language. How would that make you feel?
When you receive a short ball, think, "attack." When your opponent is attacking, think, "defend."
Try to picture yourself-making shots. Confidence is a great portion of the game.
Good luck on the courts!