Was there a Universe before ours

From what I have learned from reading books about astronomy, we had an event that occurred in the Universe billion years ago, that is now called the Big Bang. Then soon scientists made a theory saying that our universe could end in a Big Crunch, if it is real, then before the Big Bang, there could've been a universe. So was there a universe before ours that could've had planets like ours?

We can not possibly say. All we know is that the universe was created from a singularity that expanded. The Big Crunch is when the universe supposedly collapses in on itself which to me could be the first steps of creating a new universe as energy is neither created nor destroyed so that energy could be used for another expansion. Answering your question, yes there could have been another universe before ours as it could be an ongoing process of creation and destruction leading to creation.

Unknown. The current theory is that not only matter and energy started with the Big Bang, but time and space. The very concept of "Before" in relation to our Universe is problematic.

The Big Bang theory has become the predominant cosmological origin theory, but it started as a simple mathematical projection back in time of the observed expansion of the known universe. Like the temperature of absolute zero, the mathematical models describe what happens as you approach the zero point, but not what would happen to the Universe at the moment of of initial expansion (the Big Bang) or what would happen to matter at the zero thermal energy point.

What existed before the Big Bang? Unknown. Is there a temperature below absolute zero, good question.

As for the Big Crunch, if current measurements or models are wrong, and the Universe is going to collapse back, that still doesn't answer what happened before our Universe, only a possible conclusion for our time.

But, (finally) If there were a Universe before ours came into existence, it does seem reasonable that planets like our existed.