You handle the guns fine
I reckon you need a Glock tho
Firstly, I reckon you should get your spotter to run a length of electrical tape down the center of the bench in front of where you shoot from, directly under the gun, aiming directly at the center of the target. Then, you can touch the tape and know the direction you have to aim the gun. That will stun onlookers, coz they won't know how you can be so close with your aim without being told. The spotter can then just give you tiny verbal adjustments.
Now, you know how both Amber & Rex kept having to say 'a little to the left'.... well, thats your stance.... your foot position. With the gun unloaded, stand as you do with the muzzle resting on the bench, put your gun up in the most naturlal grip and aim, the spotter will tell you where to correct your aim.... if you have to aim to the left, move your left foot back a tiny bit & get your right foot comfortable. Again, rest the muzzle on the bench, rais your gun to where it feels natural.... spotter again advises any corrections. Dont compensate by aiming the gun, move your feet. When you can rest the muzzle on the bench, then raise it quickly to the shooting (aim) position 3 times in a row, you have found the most natural stance for you. Feel the tape and learn the angle (the tape is aiming straight at the bullseye) and where your feet are in relation to the tape. This way, when you get to the range, the spotter puts the tape down for you.... you just feel the tape (direction) adjust your feet to your stance, with the gun empty, do the muzzle on the bench & raise to engage..... if your feet are correct and you use your most natural grip & level, you should be on target every time
Once you have your stance right, load up and shoot. While learning your memory of the stance, you might get your spotter, when you have the stance right, tape a couple of heavy (lead?) ingots onto the floor at your toes, so you feel the tape, move your toes up to (don't kick them) the blocks, raise your gun and ask if you are on target..... After you have memorised the foot position, you can lose the lead blocks.
Also, it looks (might be the camera angle) like you have the gun at an angle to your arm. For a one handed hold, the center of the barrel should be in the same line as the center of your forearm, not the gun cocked off to the right (that is ok for a 2 handed hold) This could be part of your misfeeding problem (what type of gun was doing all that jamming? & what ammo?)
Lastly, I didn't like it that you were sweeping your left hand with the muzzle a couple of times, after you rack the slide, so just be aware of where your left hand goes after you rack. You could try racking with your left palm down on top of the slide, gripping the slide between the heel of your hand, 4 fingers wrapped over the slide, thumb pointing back at your right shoulder area, grip, pull back then let the slide go and brush (follow thrugh) with your left hand to your right forearm, so there is no way your left hand can get in front of the muzzle? Just for safety
Other than that, mate, you do great.... get your stance/feet right, dont aim the gun, aim your stance, so EVERY time you raise the gun, you will be spot on, nearly (maybe a little verbal adjustment) Maybe a laser would be a good learning aid? That way the spotter can tell you adjustments because they know EXACTLY where the barrel is pointing?
Good onya mate, look forward to hearing if this helps you at all, and how you get on....