A/C Not Working

2019 Tundra.
Bought it winter 2019.
I noticed during the Summer of 2020 that the A/C would blow fog out of the vents but didn't think anything of it.
Late Summer of 2020 the A/C Stopped working. I didn't do anything about it because I didn't need it anymore.
Summer 2021 I brought it in to the dealership for A/C repair. I was told there are no leaks just out of juice. The refilled it, $500.
Summer 2022 the A/C is no longer working, just blows hot air. What could the issue be? Would you bring it back to the dealer or should I find an A/C shop?

 

If you are still under warranty I say go back to dealer and make a stink about it.

 

Warranty is over.

 

That's not really how the system works. AC refrigerant doesn't get used up like a fuel. If it's empty there is a leak.

Have a respectable mechanic pressure test the system and replace the service port valves (they are really cheap).