Agree with 2022NYC. Do you feel like you have a solid plan of ATTACK for every pitch situation? There isn't necessarily one right or wrong approach but you have to have one for yourself that you can commit to fully. If you are looking at strike threes a lot, that's an indication that you don't have a good two-strike approach. With two strikes, get closer to the plate (taking away the outside corner), get your foot down early and be 1000% committed to getting the barrel on the ball any way possible for any pitch within a clearly defined expanded strike zone. Once you gain confidence in your two-strike approach, you can get more comfortable attacking more hitter's pitches earlier in counts and have more success overall.
Whenever possible, cage work should include a progression of straight, off-speed/curve, mixed knowing and then mixed not knowing. You have to simulate game AB's as much as possible and develop that mindset. Finish with straight for confidence.