Alright, here's a critique of your second video against Pikachu, separated by which second(s) it happened on.
:28 - A missed grab, pay more attention to your spacing in situations like this. I suggest retreating if you notice you aren't in range, or using FPG.
:32 - :36 - Here you were throwing random fairs/dairs to hopefully bait an approach, but pika saw through it and punished with an utilt. Next time, avoid doing it more than once. I think it would've been better to charge AS after your first fair.
:38 - An fsmash. Lol, everyone here must've been guilty of doing that at some time. I'm pretty sure you know you shouldn't have done this so I'll just leave it at that.
:42 - Fair to dair. Fair itself wasn't an issue, but the dair afterwards was a poor choice of tactics. If your fair ever gets shielded, I'd recommend jumping away unless their shield is small enough to shield stab through.
:51 - **** those platforms lol. All I can say here is pay more attention to where your character is.
:57 - Yeah, you knew better than to attempt a grab here. I guess :28 was just a habit you need to get rid of. =/
:58 - Once again you got punished for a random fair.
Make sure your opponent cannot get under you if you plan to do fairs.
1:27 - It looks like you dropped your shield at the wrong time. You could've either dropped it earlier (respond faster), or realize that your opponent will attack again if you fail to retreat on time and keep shielding until after his next attack.
1:31 - Pika used thunder foolishly here, and you failed to punish, you should've done a bair. On the bright side, you punished his fsmash directly afterwards.
1:59 - Good job at reacting to Pika's edgehog in time. If you had curved ES to the right rather than up this would've been a really sweet moment.
2:07 - I <3 AS's priority. It just eats up all those other inferior projectiles. Keep doing this to people dumb enough to spam their own projectiles when you have a FCAS.
2:24 - Nice, your opponent was in a rush to get rid of you and you took advantage of this with an airdodge to dsmash.
2:35 - It looked like you did a bair here, but I can't really tell. At any rate, you got punished for using such a slow move here.
2:40 - This made me lol. A thunder edgeguard that shouldn't have hit you did, and Pika was the one that died. =/
2:47 - A rather small issue, but try to avoid using fair while landing like the plague. I have to admit this is hard, but it will probably pay off greatly if you can get rid of that urge to do fair instead of nair.
3:00 - Great job predicting quick attack
and punishing.
3:15 - Oh wow, nice spacing and mindgames here. Pika fell right into your jab combo. Too bad he DIed the opposite way.
3:31 - What!? You used a dair instead of utilt? That was a bad move.
3:48 - That usmash was bad and was based on
guessing Pika would quick attack, rather than
predicting. You're lucky your shield came out in time.
4:06 - 4:08 - Here Pikachu is standing on the ground doing nothing or in other words, he started waiting for an opening. Then you got grabbed. Stuff like this should set off a red flag to you indicating that your opponent is planning on thinking about his next action. For a better explanation, read the Spontaneity section of
LunInSpectra's 7 Habits of a Professional Smasher.
4:24 - I'd like to say something about this, but one of the videos I put up in my critique thread had the same thing, only with Kirby's rock. So I'm gonna keep quiet lol.
Now then, I have a few more things to point out here...
Number of poorly spaced/timed fsmashes: 12 (8 were punished).
:38 - Punished by utilt.
1:11 - Unpunished, opponent attempted an utilt but missed due to shield push.
1:28 - Punished by usmash.
1:51 - Unpunished, opponent attempted a grab, but missed because of shield push.
1:53 - Punished by dsmash.
2:26 - Unpunished, opponent didn't predict and instead retreated.
2:50 - Punished by dash attack.
3:02 - Punished by fair into utilt (Pika utilt can kill? Really, that tiny little tail whip?).
3:26 - Punished by grab.
4:03 - Unpunished, opponent improperly spaced an aerial and missed.
4:08 - Punished by grab.
4:17 - Punished by dsmash.
Hopefully this gives you a good idea of how much that fsmash usage needs to be fixed lol.
At any rate, I enjoyed watching your matches. I especially liked how you DIed out of most of Pika's dsmashes. Just try to be more patient with your attacks; if you try something and your opponent reacts in a way in which you didn't expect, be prepared to change your plan. Keep up the good work, your Lucario is definitely one of the better ones out there. =)