Very valid response. So here’s how we understand this issue:
1- On the night of destiny, Allah determines everything, but what He determines is based on many factors. One factor is your deeds. So let’s say it’s determined for me to get into a car accident this year. This is contingent and not final. If I do a good like charity, this will be “changed.” Hence, there is room for Bada’ and this would be an example of it. That which is determined on the Night of Destiny does not strip us from our free will. We still have free will.
2- As for the first hadith which states everything is predetermined even obedience or disobedience, then one way of understanding it is that all the paths/scenarios for them are determined. In the end, Allah has a system and we cannot change his system. His system is fixed and determined by Him. However, we have some room to maneuver in this system. A simple example is this: Allah has plan A, which is me not paying charity. It I don’t pay charity, I’ll get into that accident. But then there is plan B, which is me paying charity. If I pay it, I won’t get into that accident. Then there is plan C, which is me paying charity and serving my parents, which means will grant me X or Y. And so on. So all these “plans” are determined by Allah, as they are a part or his system, but I choose which plan to go with. Hopefully this example explains it.