0:07 dont approach with bike
0:10 you could have followed up that dair with a bite.
0:12 your upair would have been a better choice there.
0:18 shoulda shield grabbed.
0:20 after the second hit of the nair you could have: jabbed, Fsmashed, dtilted, bite.
0:21 that jab could have been followed up with a bite, you would have gotten more damage than the second hit of the jab.
0:41 when you are above rob watch for the shield. If he shield (like he did there) you were suppose to bite.
0:54 coulda double jump bite
1:06 ftilt is too slow to punish airdodge to the ground, you shoulda bite or shield grabbed.
1:11 when he is doing that to you, SDI the jab.
1:23 if you get in the spotdodge situation with rob, you are going to lose dont challenge it. Just hold your bite out there.
1:24 you missed the jab cancel fsmash because u werent close enough.
1:27 you were close enough to him when you jabbed, if you fsmashed after the jab you woulda got him.
1:36 you gotta watch for the airdodges, clap woulda worked just fine to kill but you just wasted your waft.
1:41 when rob is charging a smash and he knows he is going to miss, he will most likely go into his shield or spotdodge, your best option in that situation was to bite. you woulda got him.
1:42 you should have lived if you Di'd upward and you used your bike way to early it kinda increases your death box or w/e and doesnt really help momentum wise.
I'm too lazy to go on further.
overall: when you are jumping around rob watch him. If he doesnt shield > dair. If he shields > bite. That simple.
edit: dont get too fsmash happy when he is in kill %. you didnt spam it but it was kinda obv that you were trying to go for it. Try to get rob above you and clap him or something. you should be able to read and kill rob when he is in the air. He will either nair, bair or airdodge.
Edit2: if you are going to spotdodge > fsmash when they are right next to you, try to mix it up and do spotdodge > upB. you will save your fsmash for the kill and it deals 19 damage fresh. Its not as predictable, most people never see it coming and arent a custom to punishing it and if you miss you have really good air mobility.