You want to claim that the sun could be a sun with lower mass, yet you have no idea how stars form? Or how fusion happens? Brilliant! Lol Unless you have proof of a different set of laws in the universe, the only way fusion happens(light,heat etc) is by the gravity of the mass of stars. Stars have to be that mass or they aren't stars, they would be brown dwarfs.
If you are reduced to shaming people for accepting what we do know over random bullshit You made up, you have lost the argument