Wow. Fast Fall Air Dodge Buffering into a Shield against ROB. Using the Fireball as filler when you get launched back or launch them back against Mario (might have been better against Ike). Jab Cancels with Mario. dSmash to Short Hop bAir. Using fAir to slow your momentum after being launched instead of jumping/airdodging out(not all the time, but you're getting it). Holding a Ledgegrab as a neutral position to Edgeguard Ike. uTilt comboing Ike from 6% to 46%. Dash to Fast Fall Edgehogging Ike.
At the above, I don't know if you already had all these Advanced Techniques in your pocked and I just noticed them in your videos, or you just started using them more. Or perhaps you just picked them up a short while ago and just added them to your game. Whatever it is, I hadn't seen much or most of that in your older videos. Label me impressed for this.
You lost these three games against ShadowVector (who may I just say, is way better than the other guys you showed and can edgeguard like a beast), but you showed
massive improvement! Had you not put your name on the videos, I would have thought this was a different Luigi player. Somehow you managed to quicly make a habit of Air Doding and Rolling less, and improve your approach with more Short Hop Aerials. I'm amazed at how quickly you picked it up. Label me impressed again.
As for how to improve your recoveries: I want you to take a look at the Mario vid at the end when he's ****** you with his skilled edgeguarding. Notice that everytime you Rolled into him, he'd punish you with a dSmash. I just wanted to point that out.
But the most helpful move in situations like with Mario, where you seriously need to get to the other side of the opponent with some extra breathing space, is a Grounded Luigi Cyclone. Right as you land or are about to land on the edge, you do a Luigi Cyclone and plow past them. Not to lock them into the Cyclone or to get them with the last hit to launch them into the air, but to simply get some distance. I'll edit this with a link to a video that shows it best, if I can find one.
EDIT: WeeG uses this somewhere near the beginning against a Mario in this
video.
Also, if you're looking for some more ATs, I suggest the Hyphen Smash, Jab Grabs, and Jab Fire Jump Punches. Very useful stuff.