Marcbri I think you play much more confidently and consistently when you're in the lead so that could be a goal for you to maintain when going into each match. When you weren't approaching it was Rydle who made the mistakes for you to punish, whereas when you were under pressure you sometimes blindly rushed in and got nailed for it, particularly in the first grand finals match.
Some things I suggest to help you improve a bit:
-Try to phantasm to the ledge more. You got punished a LOT for recovering onto the stage which kept the momentum in Rydle's favour.
-Use jab more as a defensive option. If the opponent shields a laser up close you can jab and you'll have frame advantage
-Don't be greedy when going for punishes. If an MK tornadoes to a safe place it's not worth trying to punish it and then taking damage because you tried.