Uber drivers will give passengers a low rating for no valid reason

Took a ride I was a 4.86 which is low and I never have issues with drivers I don't I don't stink nothing at all but somehow that's my rating . Other day I take a Uber with an extra stop I added before I requested the Uber . Check two days later nd I'm a 4.85 now ?

So because I had a stop on my ride it pissed off the driver to give me a low rating ? I have thousands of rides over the years so I know it had to be a low rating for my average to even drop by 0.01. I had been stuck at 4.86 now for the longest I give all drivers a 5 star but I guess it's time to be more critical