It's great seeing how much you have improved. My thought is that you are now beginning to repeat / reinforce bad skating technique. Looking at the way you are skating you are too much on your inside edge and are using the sides of the boot to accelerate with, turn etc. To correct it it doesn't matter how much I or anyone else talks to you about this, this can only be learned by muscle memory experience. The approach I use is to get players to start lacing 1 eyelet down, practice like this then just as you start to feel comfortable, drop another eyelet. Keep going until you get to 4 down (the top 4 eyelets not laced). At this stage your ankles have no support from the boot, they have to hold you upright and you have to be skating on top of the blade or your foot will collapse. Game time you lace back up to where you are comfortable with but every non game skate you drop eyelets. If you really want to see how much impact this has on your skating, next time you have access to a goal on the rink undo 2 or 3 eyelets and then try and push the goal across the rink. If you have good technique you will be fine, if you use the sides of your boot in any way at all as leverage during the push your foot will collapse inwards and you have no power in the push.
ps - and on those turns really focus on getting the inside foot more forward. Try stepping into the turn / pushing forward with the inside foot, not just gliding into it.