Saw some liquid CO2

I’ve got my first keg under 10 PSI for about 4 days now. I keep checking on it and because my CO2 is in the fridge with the keg, i constantly need to adjust pressure because it keeps falling.

Just now I had to do that again and I noticed some liquid CO2 in the gas line rolling like little bubbles and then disappearing. Is that normal?

I doubt seriously that what you saw was liquid co2

Ok, is it normal for pressure to constantly fluctuate?

I feel like, I set it to 12 in the evening, and find it at 5 next evening. I then kick it up to 14 and see it go up to 18 in 30-40 minutes.

Am I doing something wrong?

Close the shut off at the regulator and then set the psi. Then open valve. This will give the accurate psi.

The red handle is the shut off valve.