Do you find yourself more confortable playing on the right side of the net than the left? From watching the video, I feel you are a completely different goalie when the puck is to your right. Your stance is better, it's deeper, wider, and more stable. You can post load on that side and also push off the post in a butterfly to the new angle. You also seem more reactive and active. On the other side of the net, you're standing up more, so you aren't getting your feet out and body forward. There's no post load, or down movements. And you seem to just be dropping and praying on any indication of a shot.
What I see with your play starts with your ready stance. You're playing a very stand-up style, and I don't know if you mean to. I feel like I'm watching Darren Puppa! lol Get your feet wider apart, maybe even twice as far as they are now. Then bend your knees, bring them together a little, and get your chest up and forward. In other words, don't bend from your back. This will put you in a much more reactive and efficient position. Dropping to the ice will be faster, and it should help you close your 5 hole. You'll also be bigger in the net and have a better "aerial angle" to the puck. There's a lot to work on, but I feel that starting with widening and deepening your stance is the key to the other things.
To get square to the puck, you can use reference points on the rink to divide the ice into zones. As the puck moves from one zone to the next, you just move reference points. Here is a good breakdown of how this works.
One other thing, and maybe it's just a pet peeve of mine, but don't lean on the crossbar. It's terrible body language and i feel it causes a lack of focus and concentration. If you're concerned about the mental aspect of working with no goal support, leaning on the crossbar (especially as quickly and often as you do) is only going to hurt with that.