What is wrong with my bones bearings?

i have 4 wheels and when i spin 3 they sound fast and they make a roaring sound and they spin for at least 40 seconds but when i spin the last wheel it makes no sounds and it spins for atleast 20 seconds, and when i ride on my skateboard it makes a weird sound

Just get new wheels

its fine, it's normal not a biggie at all

The okorder /