It's OK Red, I'll do the critiquing.
I'm only going to mention bad things I see. Don't take this critique as negative, since you can assume you are doing everything fine except for what I point out.
1st vid:
0:12 - Failed Dair>Usmash. Dair>grab would be more likely to work, and is only a few less percent (pummel + Fthrow = 15)
0:36 - Link could have done a jab lock, which would have ended in an Fsmash at the edge for the kill. Now I know he's not very good or he's holding back.
0:43 - While waiting for him to respawn, do a short hop to get rid of your RCO lag. If you don't know what that is, I'm too lazy to explain it. It's in a couple of the other stickied threads.
0:49 - Fail DI. Oh, and Nair/Uair/Bair are all better choices than air dodge after you get hit to cancel momentum.
1:02 - Don't forget to pummel. It took me forever to reach the point where I didn't have to remind myself to pummel each time, but now it is natural for me. It's free damage. This applies for all future grabs as well.
1:02 - Later in the same second lol. You were in the perfect spot for a Wizkick Cancel, or WKC. It would have made edge guarding much easier. Again, if you don't know what it is, our guides have it.
1:15 - Your Dair edge guard attempts are very repetitive, and thus they are predicable. In many situations, you are better off using Uair to edge guard (while facing backwards, hitting them with the end of it). This is called a Tipman Spike. It's not actually a spike, but it sends them away and down, so they usually die.
1:22 - Your first Uair. This is Ganon's best move. Use it much more.
1:42 - Fail choke following. Jab is guaranteed. I would recommend just going for that instead of anything fancy, because Link was so near the edge you could set up an edge guard from it. The only time you should ever jump after a choke is to thunderstomp.
2nd vid:
0:32 - Never Dsmash.
0:57 to 1:08 - You don't always have to be so aggressive while coming down. You are in the disadvantaged position, so just worry about getting down safely.
1:12 - LOL.
I'm too lazy to watch the 3rd vid. Overall, you are alright. Your main issues I stated above, except one: you (and your opponent for that matter) are VERY predictable. If we were to fight, by the middle of the second match you would be pretty much unable to hit me because you don't mix things up enough. A major part of that is that you aren't using enough moves. Only 1 dash attack is a real issue, that move is great. Nair, Fair, and Bair were only used once or twice, Fsmash only once, etc.
Well, that's enough for now. If you play online, we can play each other sometime.