'Trans ppl really are savants at turning the mundane into the sublime huh'
No, they're not, because they're ignoring the mundanity of their own lives in favour of chasing a 'grass is greener' situation. When you're trapped in a symbolic mindset, you assign 'feelings' and 'states of mind' to certain aesthetic or narratives ideals, making them hyperreal. That 'old guy' isn't a real man, with hopes and dreams; he's a character, an archetype. You think you're making him sublime by romanticising his life, but you're not, really. You're the woman from Pulp's Common people; other people's lives are props, they are aesthetics to achieve, isolated from real-world cause and effect. That old man didn't just pop into existence, fully formed - he got that way because of circumstances in his life, also mundane, but very real to him, in a way that is impossible to you. If you want to claim his life for your own, you are ignoring your own mundane cause-and-effect that made you the way you are.
When you eat a piece of toast are you thinking 'I like this because it is a nice piece of toast', or are you thinking 'I like this because it reminds me of his lifesyle'? But him eating a piece of toast is both something that's not fundamentally different from you eating a piece of toast, and also, quite literally, world's apart from you eating a piece of toast. You're not going to feel like him when you emulate him, when you imagine what eating toast like him would feel like. Perhaps, instead, the point of eating a piece of toast isn't that it's more romantic when other people do it, but rather that toast is tasty and eating is important for you and your body and state of mind. Maybe, when he's eating a piece of toast, he's also thinking 'I like this because it is a nice piece of toast', meanwhile by emulating him you're, well, not thinking that, are you? Ironic, isn't it?
What you're chasing is not only impossible, but a trap, and take me as a warning. I regret a decade of making inauthentic choices for myself, of turning my environment and people around me into props, of believing that I was getting transcendant joy out of basic experiences that others took for granted. I robbed myself of the ability to be honest with myself about who I actually am and what I actually want to do, instead jamming myself into a box of aesthetic and narrative ideal. That is the exact opposite of turning the mundane into the sublime; it's ignoring the mundane in favour of hoping that you will achieve mastery over your own life story.