When you had 2 stock, were you feeling a bit confident that you were going to win? Gotta be careful with that mindset, never give up until it's over.
I'd suggest you watch your aerials carefully, you did a lot of them that left you ripe for punishing.
As for general stuff, Silvr predicted you a lot. I'd suggest throwing your timings off just by a little bit, like waiting a split second before doing something if you think he might try to dodge it. My favorite is dash attacking when I catch someone in a spotdodge. You shouldn't use up all your jumps then try to recover, leaves you really predictable. And with jumping mindgames, you generally don't want to attack on your first or last jump all the time. Definitely don't attack on your last jump too often, it leaves you really open.
I guess another thing would be not doing slow attacks when he's right next to you, if you want him to go away, use a Dtilt.
Dang, if only I were as good as I sound right now, lol. Anyway, good luck with your next matches.