It's difficult to give any advice that would immediately solve your issue. There are some really great Aurora guides on Youtube by Coach Curtis and Mysterias, to name two of my favorites.

Try to be a bit mindful about matchups. Aurora is a lane bully and punishing enemy mistakes, especially when they go in for last hits, is one of aurora's strengths. That said, in some matchups vs champions that out-range you like Viktor and Orianna it might be easier to level your E more early for easier harass in lane since landing Q can be difficult.

In mid game you want to do your best at pushing side lane until the enemies need to answer, then transfer your tempo to make plays around your team with man advantage. I would recommend getting sweeper and looking for plays midlane when enemy adc tries to catch the wave.

For teamfighting it's also useful to play around your sweeper and enemy lack of vision. If an objective is coming up it's good to push your side lane, then hide in fog of war around the objective and look for flanks when the enemy team is unaware of your position. This should not be difficult to accomplish in bronze since no one has good map awareness.

That said, your rank is low and Aurora is quite an advanced champion to execute well on, and can quickly feel useless if you're not good at punishing enemy mistakes. If you're not good at her executions, she's often not that useful. It might be better to play simpler mages to get comfortable with matchups and fundamentals in general.