Stop charging your smashes, lucario's Fsmash already takes long enough to get released. Also try to use A>A>FP more often because I find it works great. Also use FP and Utilt more and mix up your tactics.
Hope to see more videos of you and hopefully you won't have to fight a CPU.
Don't try AA-FP more. AA-FP is very very very unreliable against anyone with Lucario experience. I guess it works until they catch on though, which should be almost immediate.
Anyways, Red Ryu, four things really hit me, other than the fact that that's a really sweet CPU Sheik.
Firstly, you Full Hop Fair to Dair way too much. What are you aiming at? Yes, Dair gets spaced if you do this, but it's really a dumb idea to do it THAT OFTEN. Use it maybe like once or twice and that's it. Fair is meant to be the one that connects to start off a small chain into another aerial. Short hop it spaced as an approach when you see them vulnerable. Default to Dair for maximum damage if they're grounded, or nair if they're either too high for a dair, or at a low enough % to chain into another jab grab.
Secondly, Chasing is actually a very good idea against characters like Sheik. Get close with Uair, and if they airdodge, use a Dair immediately to catch their vulnerability frames.
Thirdly, STOP FSMASHING. Galgkjupaosidupbepouer. Azen is not a good example for anyone! Fsmash should NOT be used when an opponent is near you AND in complete control of their character! It's an especially bad idea against Sheik, who can just hyphen smash at you from the range you usually fsmash from and completely wreck you. Space people out with moves like Ftilt, jabs, Fairs, or Bairs. Fsmash at close range is just ASKING to be smashed, and once again especially from a character with a very powerful KO move like Sheik's Usmash. Also, Utilt is not a get out of jail free card. It's still pretty slow, so don't think you can escape punished fsmashes with it.
And lastly, stop freaking rolling. Rolling is okay when you're trying to escape a bad situation sometimes, but you're just using it religiously. Even I could've predicted some of the rolls the Sheik did on you, such as that nice fsmash chase. I probably would've predicted more though and used needles to punish you when you rolled away. You roll every single time you're too close to your opponent. You rolled every time you were close to shiek, especially if you landed with an attack. It's really really easy to read, and for many characters that matter, as well as many that don't (like Shiek), it's very easy to punish. Seriously.
Also, I'm starting to think you're not using a GCN controller, Red Ryu. you charged all your fsmashes (not a bad thing if done properly), and mostly full hop faired as if you were struggling to figure out short hopping.
@DusK: I like your Luc. I really like your Luc. You seem to know your basics well, try to be offensive, are somewhat creative at times, make good reads, don't roll, and overall seem to be off to a great start.
Basically what Teddy said. however I am going to expand on parts. you Dash attacked pretty badly, and got punished for it. no worries though, Most ppl go through this stage.
Ridiculous. I don't think anyone goes through a dash attack phase. It seems more like he just likes the move. The way he utilizes it though actually isn't bad at all with the uair followup. I like it, actually. It's very interesting, although he does use it maybe a tad too much.
Try to space fsmash. It has ridiculous range anyway and as an added incentive, gets much stronger if the tip hits. I see you got punished several times from poor spacing. also, Fsmash has IASA frames. use 'em.
Fsmash is a HORRID idea against Diddy Kong. It's just begging to be ***** by bananas and fast moves. Ignore this comment, imo.
also practice your B-reversals with AS. its a better option than using FP to turn around.
I don't remember seeing an intentional FP. AS turnaround I hope is what you mean, although both are pretty cool.
Save dair for the kill. You used it until it went stale. Dair is a combo finisher, a recovery tool, or a killer.
you used it like it was needed for every second of the match.
Ignore this. Dair when neccessary. Dair is good. Use it when you won't be punished. If all else fails, kill with Nair or Bair.
Pivot grab more. It makes up for the puny range regular grab has.
I don't know about you guys, but I just can't seem to understand all the hype about pivot grab. It has an awkward command and sometimes makes you slide so far that the extra distance you were supposed to get is canceled out. Is it really worth the 2 extra frames that're probably canceled out by the command itself?
all in all. you did Ok for a Lucario at a disadvantageous position. (why did you let him get FD?) show us more videos.
Luc beats Diddy. FD isn't that disadvantageous for us unless we let Diddy gain control. They probably were just picking neutrals.
Anyways, for my own two bits, I really didn't see much wrong. You performed very well against your opponent, although you slightly used dash attack more than you should've, even though it payed off more often than not (I like the idea, but it might've ben used a bit too much). Another minor thing was that you didn't edgeguard Diddy as much as you should've. Luc gimps Diddy rather well, so you could've taken more advantage of that. The only serious problem that I saw though was that you don't seem to know what to do when your opponent is behind you. Utilt works well in this situation and will cover you most of the time.