A budget version of my main deck from Master Duel intended for real play, the deck is focused entirely on going second and winning off of 2 level 8's into Dragluon into Numeron Dragon. Going first, the best option is usually to set up Spirit Dragon and sit on it unless you absolutely need to go into Azure-Eyes, although Hope Harbinger is also very good. The deck actually does pretty well in the long game as long as the opponent can't remove True Light, as a free reanimation every turn represents serious inevitability. The deck's biggest weakness is bricking hard from all of the random dragon garnets. Since I had to drop a huge amount of the handtraps I would normally be playing over budget concerns, more hands should be able to combo, but the caveat is that breaking the opponent's board is so much harder. At least kaiju are good at that, not to mention how well they interact with a Relinquished Anima summoned off a White Stone.
My rule for deckbuilding was no card with a TCGPlayer average price over $10, although I did allow one exception in the form of a singular Bingo Machine Go that can be searched off True Light and find either of the Blue-Eyes starters. If I had more budget, I'd have 1 Abyss Dragon to find Chaos Form, 1 Heart-Earth for going first, 1 Soldier of Chaos as a banisher, maybe 1 ZEUS for control, 1 Star Eater to synchro with Ash, and some combination of additional Imperm, Droplet, Lightning Storm, Ash, or even Droll and Lock. I'd also note that the sidedeck is half being used here as a maybeboard so don't give it too much thought.