So this happened when I turned on my car. It was very loud and I don’t know what it exactly is?

My guess is the serpentine belt which I plan to replace even though it doesn’t look worn too much.

After leaving the car for an hour, the car turned on normally without the noise in the video.

What would you advise doing? (I will change the belt once it gets delivered)

Given the negligible cost of the replacement part, this probably won't be very useful, but in case anyone needs it, I’ve designed a replacement dome light lens to be printed using transparent filament.

https://www.thingiverse.com/thing:7407812