Game 1: I understand that Cloud is scary, but it seems like you're spending wayyyyyyyyyy too much time in shield. You're not playing cautiously, you're playing scared. Your shield won't kill Cloud, your hitboxes will. You spent so much time running up, shielding, then running away, that you never really...did anything to your opponent. I understand you're likely looking out for Nair, but the constant retreats make getting something done difficult. Try holding your ground more, get comfy in close quarters.
On that note, your opponent heavily used shield just like you. You need to incorporate more grabs into your game, especially since you rely a lot on dash attack.
Game 2: Well, you looked like you actually had life in you. You were significantly more aggressive. You combo'd, you didn't shield or roll many times, and you actually used some grabs. You also landed both gimps, which provides huuuuge advantages over Cloud.
Most of my observations throughout the rest of the game are just more of the same. Lots of shielding, sometimes double rolling for seemingly no reason (see beginning of game 3), when you actually do aggressive things and carry momentum you succeed. Also, Yoshi bombing off the stage is typically bad (rip my soul).
You could stand to optimize some of your punishes more. For example, Game 4 at about 13:00, you shielded all of cross slash and then... down tilted out of shield for 5%? Why not go for a grab and throw him offstage to setup an edge guard? Choosing your punishes better would allow you to acquire more of that momentum that you carry so well and can do so much with.
I never saw you use Usmash, btw. Any particular reason why?