If that's the case, I propose viewing yourself as the main character of a Slice of Life anime.
It's okay if you're not the chosen hero, it's okay to just be some guy. You can still see yourself as a protagonist in this regard so by all means, root for yourself. But it's okay if your story isn't one about a magical third act where you're isekai'd and fighting demons.
trouble with delusions of irrelevance is that we're closer to correct than the saps who think they're a disney protagonist.
If that's the case, I propose viewing yourself as the main character of a Slice of Life anime.
It's okay if you're not the chosen hero, it's okay to just be some guy. You can still see yourself as a protagonist in this regard so by all means, root for yourself. But it's okay if your story isn't one about a magical third act where you're isekai'd and fighting demons.
Be pretty cool if that magical third act existed though.