I still don't think you should rush into your next fight so fast after losing. You need to fix the problems with your technique which means hours and hours of pad hitting (consider finding a gym which DOES have the time to train you). A few weeks is not enough time to drastically improve, i personally wouldn't take a fight for another 6 months if i was coming off two straight up losses.
It is tough ditching a coach who is not perfect for you, if you do not feel comfortable go to another gym to supplement first and then decide. I had to leave my first coach too, even though he was a great guy he didn't look after his amateur fighters as well as he should have.
Can't really comment much on your videos, have only done a few months MT but from a boxing standpoint you could really benefit from pad hitting.