Rear wheel/brake squeking video. Need to lube or oil?
 

Can you help me. Back wheel makes squeaking noise. See video.
Is there something I need to lube or oil?
See video of me spinning back tire and making noise.
https://1drv.ms/v/s!Auxv9HJAldqqgbokBZaqxvit2u82IQ

Sounds like a worn out pad touching the disk.
If that's not it it's either a problem with the chain or a wheel bearing.