I'm making a zombie rpg in a kind of post apocalyptic setting (think fallout with more feral ghouls), wandering if anyone would want to play this game and has any ideas?

Just use your own ideas. If you ever join the games industry you might be complaining about how you're always implementing other peoples ideas and never get to come up with stuff yourself. So if you're making your solo game this is your chance to use your own ideas.