Lat Pulldowns: try bringing your arms down more vertically, rather than rowing horizontally 

Cable crossover: focus on squeezing your chest, if you feel your chest better when you cross your hands over, continue to do so

RDLs: it looks as though you’re bending with your back, focus on pushing your hips/bum back rather than focusing on lowering yourself down

Lunges: think of lunges as a leg press with a single leg. The leg where the knee touches the floor acts as balance, all the pressure is on the leg you put forward.

Machine Chest Press: Keep your shoulder blades pinches (i.e. keep your upper back tight), your shoulders should not come forwards whilst pressing. This will help you contract your chest better too.

Cable Crossover: Bend your elbows more on the bottom portion of the lift (try a 90 degree angle). This should help keep more tension on the chest.

Overhead Triceps Extension: Form looks good, but slow down on the bottom portion of the lift, feel the stretch in your triceps.

Triceps Pushdowns: Lock your elbows in position, there should be no swinging. And drop the weight, focus on increasing the range of motion.

Cable lateral raises: Keep your arm fixed in one position (elbow locked), don’t stretch too much at the bottom of the lift, don’t overextend at the top of the lift, keep constant tension on the intended muscle (side delt).