0:04 - Don't FH Zair, use Fair or PKF.
0:08 - Don't use Jab, Fsmash will instantly reflect the hydrant, while a vertical attack sends it up to help with stage control.
0:19 - Avoid wasting out your ledge invincibility.
0:22 - Try to always SH PKF, as it's much safer.
0:25 - While you didn't get punished for it, try to avoid bad options like Dsmash - 17% isn't that much, it doesn't kill at that % and it's laggy.
0:41 - That Usmash was pretty smart, but it also would've put you in a really bad position if the Pac-Man airdodged correctly. A pivot grab would eat right through the airdodge and you'd get followups and an edgeguard.
0:46 - That's just a case of guessing wrong, but Nair or even Bair would've been slightly better.
1:03 - Don't approach with falling Nair, the initial hitboxes have barely any hitstun and you could've gotten Usmashed, if not shieldgrabbed. Instead, space a Zair or Fair.
1:31 - Not sure if this was a mistake but when doing a PKT edgeguard always be ready to bring it back into yourself should the opponent get up on the ledge safely.
1:41 - Avoid landing with airdodges, you could double jump or land with Fair/Zair.