Lolz, honestly my DDD sucks actually, you just need more experience with them to face one. You have to really be smart with your approaches. Though, with Wolf I really just started spamming my smashes just for giggles.
Your Pit was decent, you have good arrow control and such. But you generally use WAY too much smashes. Down smash is all right but front smash is used at higher percents to KO, using it too much only makes it weaker. D tilts and Utilts are good. Fit a lot more of them into your game. Also Pit likes the air, Nair has multiple hits and is good for approaching. Uair is generally the same but used on opponents above you. Bair is great its pretty fast and has great knock back. Try going off the stage more though, just jump out there while shooting arrows and you can Bair, mirror sheild, stage spike or any other things that may screw over your opponent for an early kill.
Lastly you roll/spot dodge WAY too much, more than you smash. Pit's dodges are nice but like any other dodges they are for predictable moves only. This was really evident during the DDD match, half my game with him is punishing dodges and bad approaches. Generally you can do anything out of a dodge until it's over. Your sheild is you ultimate precaution. Use it whenever your opponent may out approach you or you're just not sure what they'll do. Out of a sheild you have many more options like a sheild grab, an UpB out of a sheild, short hop etc. You can also tilt your sheild to block attacks that might have sheild stabbed.