Agreed tp the below comment. I made my first pinball game in unity in 24 hrs for a jam. Check it out.

Pinball isnt meant to just hit a ball and let it bounce around (unless your talking old skool 1950s) but pinball is a game in itself, there should be missions, etc, and a goal.

Also, the physics is way off. Just my 2cents.

Maybe try again and put more effort into your next game.