That second match 1:09 in you both used the same moves twice but facing the other way along with 1:47 an usmash dodged the other Yoshi's d-tilt lol.
Somehow as well, 2:19 Dtilt hit above him
As for wut to do, better to spam USmash over Fsmash, stop throwing out kill moves at low %'s and just use eggs and aerials to tack on damage. Stop being too greedy for the kill cause you're missing almost every kill move when the opponent is over 100+% and you're getting punished for it (3rd match 2:27 for example) just wait to see what they do before following up, more Dash attack too it's a really good move to use this time around.
You also need to learn how to catch onto the habits players do so you can get more punishes, for this kinda example almost everytime he was in the air he B-reversed or Eggtossed (dunno if call it Wavebounce, or just the regular ET since new momentum and all so can't really tell since I do not own the game until Wii u)
Will say that as he played more matches, the more fast and aggressive the green Yoshi started playing, but faster means more jumps in the air and more instances I count b-reverses lol. I think the 5th match alone (not counting eggtosses) I counted 17 or so attempts/actual B-reverses the Yoshi did.