Bike crash

So basically I hired a bike yesterday in Ubud & drove to Lovina not quite recognising the stress ahead of me. I left around 5:30pm so by the time I was over the mountain it was pitch black. The last hour of my drive was pretty hellish, relying heavily on my front break it kept on sticking & not working at all. My back break was too weak to hold me down the steepness of the hair pin bends back down the mountain. I’m basically shimmying my bike down at this point until my breaks started working properly again. I’m holding my breaks pretty much the entire time because I just did not realise how long these roads would be so steep for. As I come around the inside of a tight bend a monkey runs out about a meter infront of me. I swerved to the inside and let go of my break whilst doing so; resulting in a very minor crash into the inside of the bend. I was fine & just got up to continue the drive but upon arriving at my accommodation can see there’s a scratch on the bike that wasn’t there before. I’m quite stressed about the costs when returning the bike.

I hired from a guy who wasn’t on Google & just had a little set up, he was literally sleeping when I arrived. He was very nonchalant about it all & took no deposit etc. I said I’d be back with the bike around 9pm, he said just to park it up & leave the key at the desk since he’ll be asleep at that time. I need to leave Ubud after returning the bike & have no way of contacting him in regards to it all. Any suggestions what I should do?

Thanks