one advice I can give you is to make the game easier to market 🤔
give people who make streams, trailers or just screenshots for the game an easier job:
put some landmarks on the tracks (instead of just generic tracks)
maybe some portraits for the drivers (something humorous perhaps)
and in a racing game cars are everything
make them as flashy and robust as possible
you seem to have a concept that has the potential to stand out
but you need to drive it home (pardon the expression 🤭)
right now it feels a bit too basic
(I learned this lesson the hard way myself making one of the most generic RTS games ever 😓 )