MOG.
The short...
It's NOT your blade/rubber on your BH attack misses. It's YOU. Sry.
Majority of your BH misses you are hitting WAY too far in front of your optimal impact zone. Difficult to transfer power with control doing that.
Would also help if you dip your hips down some more and use them some more on the way up and forward... although you could also generate the kinetic energy by a mini step forward.
Right now, once you get the ball in your impact zone, you will land a few more by loosening your wrist a little more.
Sometimes, you try to impact the ball so far out of zone you use this long sweeping stroke pivoting off the shoulder... this isn't gunna land very many balls on the table. Use your upper arm to get your lower arm into the zone you need and use your lower arm pivoting off the elbow joint. You will be a lot more consistent on BH wing doing that.
For now, focus on a shorter swing, waiting for the ball to come into the zone, use a little less power, a looser grip... the goal is to get the timing and impact down... then go progressively more power from there. Shoot for consistency, position, leverage, relaxed easy power first, then worry about being the guitar hero later.
Not the only approach, but a proven one.