About a Humanoid Gundam Transmigrating to the Honkai World

I'm a new author, and this is my first book. I'm also a big fan of Honkai Impact 3rd, Genshin Impact, and Gundam, so those will all feature in the story. Also, I'm not very good at writing talkative protagonists. I'm usually a quiet person, though I have a lot to say inside my head (basically, I'm a brooding type). So my protagonist will also be someone who doesn't say much but has plenty going on in his head.