Lol Fabian just keeps throwing projectiles, he really must switch to YLink XD
Anyway, your Yoshi just gets hit by 3/4 of them. Learn to airdodge them (normally away from your ooponent), shield them, or simply not get in their way ^^
You seem to know the basic of DJC, edgeguarding and such, but you just don't apply them well. As you can see, yoshi doesn't have a good grab, but this doesn't mean you don't have to use it. A shielded opponent is almost completely protected from your attacks, unless you grab him, meaning you can't just spam DJCed aerials on his shield. The point is, if he doesn't expect it, he won't immediately react to your grab attempt and won't counter it. You can use the faster neutral B otherwise.
Learn not to stay close when starting a DJC aerial, otherwise a timed move of an opponent will just hit you after your DJC and before your aerial, leaving you without means of recovery (as it happened).
After that just practice in performing correctly the advanced techniques and you'll be fine.
