Ok :D For the third video:
0:20~ Should have been an easy edgehog, but you decided to grab the ledge earlier. After making the decision that you did, you should have stayed on the ledge since he wasted his midair jump, then dropped and baired him as he jumped off the bike, and that would have nullified your first mistake. You such had an incredible advantage here in terms of positioning that it should have been a stock.
0:24~ You jumped and naired while he hung on the ledge. Correct me if I am wrong about this, but Falco's nair does not hit below horizontal. Therefore, what you did sacrificed you positional advantage for something that had a low reward and low chance of succeeding. You should have waited for him to make a move, then reacted, because afaik wario does not have any terribly good options off the ledge.
0:36~ The fullhop nair was really telegraphed.
1:00~ You gave up the positional advantage here again for no reason, and further put yourself in a spot that is very dangerous, being both below your opponent and below the ledge. It worked out well, but it really shouldn't have.
1:55~ Wario wiffed a down smash, and you didn't punish the mistake.
1:58~ Warrior was in a fairly safe place due to his bike shield, and you are winning, so you should not have approached. It probably would have been better to destroy the bike first, or just wait for him. He would have to leave his spot eventually since you were in the lead.
2:20~ Wtf?
2:38~ He was charging a forward smash, and you jumped into it. You managed to shield it, but it was still very risky, and you may have even been in killing range (I don't know the percent that a fully charged wario fsmash would kill falco from there, but i suspect you were close). You should have stood just outside its range, and punished after he wiffed. It would have been much safer and equally effective.
2:58~ There no reason to keep following him with non guaranteed follow ups at that point. At your percent, it was a high risk, low reward move, and you got punished and killed for it. You were still in the lead, so you could have just lasered and waited for him to make a mistake.
3:05~ You held your shield slightly too long. There was a chance to punish, although small.
3:06-end~ He pretty much just outplayed you on the last stock. He kept you at a situational disadvantage or neutral for pretty the entire last stock, except for a brief moment from like 3:17-3:20, but you were unable to capitalize, so it reset to neutral right after.
Overall, your main mistakes were making mediocre decisions in various situations. That is definitely one of the toughest aspects of smash, and so much harder to do well in-harder than to critique afterwards. Even pro's screw up a fair amount (see EL's critique of Hylian vs Roy_R match). You looked quite good though, and should have had the match if not for two moments though. Hope that helps a bit.