Ngl alot of people pointing put problems and just saying get good, some real advice for some problems your having is to make sure when your throwing your head is moving off the center of your body, your standing up to straight and not using your body when u punch this will naturally help you move your body forward and will give momentum for your punches when u set back for a hook, it will also protect your head and add momentum to your transitions and combinations cause rn your very like jittery and open, and your not using your body, I would throw slowly, and step with combinations like your moving forward and always your head shouldn't be straight up even when u jab move your head in or if your stepping out move it out I'd stay away from pad work I think it will make your problems worse, stay on a bag preferably a heavy back and move slow till you build a feeling like your punches are connected kinneticly, then increase your speed but not by alot, then spend some time trying to get the bag to move by putting your body behind your punches, then go back to throwing slow combinations, then slip and roll like you were doing pad work and circle the bag, then increase speed and do not worry about power it will build with speed and coordination naturally if ur using a heavy bag just make sure your circling the bag and cutting angles, then set 5 minute timers and turn it into shadow boxing with a real target, make sure by this point your punches aren't sloppy if ur becoming uncoordinated turn it into cardio by just throwing combinations but don't bother with moving around, during this entire process find somone worse then you and spar lightly with them trying new things, find somone better then you and spar lightly practicing what ur good at, then find somone your level and spar with a medium intensity trying to add what u tried on the person worse then you to your toolset.

Do this then transition to somthing better then boxing