These are just my thoughts! And I like doing this to see if my eyes are seeing correctly and if my hindsight is working correctly. So do shop around and bear in mind my background.
Video One = Black goes to a high vom tag around the 44-45 mark, and white does something good here. At about the 46 second mark he thrusts into the face of black. Black must answer this, and backs up. White has a good opportunity to cause trouble here. Whenever the opponent's foot moves, especially backwards, try pressing the attack. By attacking during the tempo of the movement of the foot, things might go surprisingly well. It's harder for black to attack if white catches him while he's going backwards. John P adores it when my skinny leg moves and he attacks me mid-motion. It makes my response that much harder because I'm busy moving!
Black leaves the high vom tag and goes to pflug at the 48 mark (if my Italian eyes do not deceive me). This is done fast and smooth followed by a thrust. White needs to answer this thrust and I think one solution would be to exchange the point and try and void off-line. IE- move the opponent's incoming tip aside, while passing to deliver your own thrust. This counters the enemy's thrust, moves the body off line, and replies with an attack all in one movement.
At the 103 mark black strikes white, but it's hard to tell how hard. It sounds like white deflected most the force out of the shot, but I can't quite tell and this is a video perspective thing, not criticism.
Overall, white isn't in the 'vor' very often, which if I recall, Germans tend to like. White moves into range, black does most the committed attacking. Black is aggressive, dynamic with cuts n' thrust and smooth in movement.
Video Two = Black at the 19 mark meets Period (as in period dress!) at a high bind, then snaps into the chest. Very, very fast. Probably faster than period can do anything about it. A possible solution if it happens a lot, is to not meet at that particular bind, or, soon as the bind is met, pass in. Closing distance and getting hip to hip and mask to mask makes winding harder to do and allows for off-hand narrow-bind action.
In the next exchange, period does a good job of answering black's attacks, with ones of his own. Around the 28 second mark there is a bind, that then rotates and they both leave. It may be better to stay in the bind and seek to wind and win, or grapple. Period points to his arm, but I can't tell what happened to it.
At the 38 second mark it looks like black goes high (look at me) then low (fooled you!) and thrusts. Similar to what we saw in video one.
Video Three = White stays in the 'nach' as ze Germans vould zay. Period gets to launch free attacks and lands a thrust. Soon as the blades meet, and the threat is over, white can try and press in. Even if its not a good attack, just to get in the habit of making every foiled attack the opponent makes risky. If an opponent knows they can attack without being answered, then they'll throw attacks over and over till they get a hit in. Why not right? This is what my eyes see. White might want to experiment with the following. After the first attack is blocked (which he does well), pass in, and pass deep. Throw your hip into them if you need to and get comfy at this close measure using winds/binds/and friendly grapples. Don't worry if you die a bunch doing it, just get comfortable with being in a bind after someone's attack is blocked. Nachreisen is a term that pops into my head.
At 101 watch how period performs a thrust while moving off line. This is a handy skill to void and strike. Period is not only off line, he's continually moving past white. While period is more agile, white can do the same thing with deep passes.
Hope my eyes see things that are of use to you all!