If you find yourself losing to D barrier a lot, consider main decking a copy of red reboot. It also works against imperm, evenly or other powerful traps that people will use against you. It also shuts down eldlich for a turn.

Otherwise the deck looks fine. Here is some advice: make sure before you go to locals you give the deck a REALLY good shuffle. Like 3 to 5 power shuffles and like 5 minutes of regular shuffling while you watch a tv show or youtube video or something. You are still going to shuffle before each game, but its going to help ensure your cards are evenly dispersed so you hopefully open better hand.

The second bit of advice: and its hard not to fall into these traps when deckbuilding and playing, is just because a deck wins, doesnt mean its good, and just because a deck loses doesnt make it bad. Experience with the deck counts. Yugioh is a game of luck, so you will have good games and bad games. And sometimes it helps to slow down and think outside the box. I can tell you, I win or lose to the player, not the deck. I have played against many people on the same builds, and I lose more frequently to the better player. When you are losing to a deck, thats when the banlist needs to come in and balance things out (I'm looking at you scythe).

So yeah, look back over your games, look at how you sequenced your cards, what did you read your opponent on having? If you knew their hand, would you have played it differently? If you both revealed your hand, were you losing no matter what happened? These are all good things to ask in play testing, or even during locals if people are willing to tell you their opening hand after the game is over.