I felt like you were a lot better than that luigi(no combos, no juggling, where were the jab grabs?, he kept hitting your shield, etc) and kirby (final cutter, fair approach, fsmash spam?, no throw combos, bad spacing).
Rob match:
The first stock started out great! Nice job keeping the pressure up. This is how you win that matchup imo. Stay in his face and don't let up. If you don't keep the pressure up, then he'll just camp you harder. I'm a big fan of flame breath but i don't think it should be used often vs rob. Rob isn't so great when you're under him but I didn't see you go for a utilt kill but the dsmash kill was pretty good. Gotta work on your klaw hopping. The ac fairs were good in the first two matches but I didn't see you try it in this matchup ditto with your jab game. Walking up and shielding is probably the best approach but you should try and mix it up (klaw hop, ac fair, ac retreating fair, SHAD). Like choice said in the video comment, too much SHAD.