The best Honkai: Star Rail Trailblazer build is all about boosting the protagonist's attack so they can whack enemies even harder with their baseball bat. Perhaps I'm oversimplifying, but the initial Trailblazer's Destruction path is pretty straightforward—boost attack to unleash a stronger basic, skill, and ultimate.
Things get a little more complicated later on when you have the option to change paths to the more defense-focused Preservation, but at the start of the game at least, the Trailblazer is relatively simple to build. So, here's what light cones, relics, and planar ornaments I recommend to use, partly based on how good they are, but also how easy they are to get. There's also some info about where to get the Trailblazer's ascension materials for levelling them lower down.
