I'm using a pixel 6 and everything has been fine and I've traveled a fair bit around the world with it.

Try factory resetting it and don't restore apps and settings from backup

I've got a pixel 6, never had any issues with it. I would recommend all the usual suspects: turn it off and on, update, factory reset.

If you are up to date I remember people complaining that the latest update broke some stuff for them, that might be your issue?

I have a Pixel 4a 5G, and only now am I reluctantly upgrading. Reluctantly because it still works wonderfully, but I want wireless charging, and continued Graphene support.

I'm sure I had a lemon, but I think I had either the first or 2nd gen phone and it broke within 6 months. I had it in my hoodie pocket and I felt it vibrate so I took a look and it went into boot loop. Sadly I did not turn on developer mode so I could not get access to it or wipe it and the reset wouldn't work either. Essentially it was wiped and I lost everything. I also don't remember why but they did not allow the warranty either. Good news was it was a work phone so I did not pay for it. It was the only one I tried and I will not go back. I enjoy my Samsung.

I bought mine when it fiest came out and I'm not really having any major issues. I find the screen rotation will occasionally act flaky and I had to reboot a couple of times because the keyboard wouldn't come up qhen I touched a dialog box, but that stopped with the last update. Sorry you're having trouble.

Ive noticed my pixel 6a will quickly disconnect reconnect to WiFi, phone calls I become muted for the other person at random. I think they cheaped out on the networking or the implementation of the networking.

Also worth noting that its been this way with several ROMs

My 3a is really solid

I have a pixel 6a and it works great. However, I did run GrapheneOS shortly after I got it, so that may be why. I don't use the Stock OS.

So google might be trying to get you to buy the newest phone? I know apple likes to slow down their old phones so people upgrade, maybe Google does the same.

Let me guess you had multiple profiles? Get a samsung or a OnePlus. Should be better. Pixels are known to have issues from time to time with new updates. The recent storage bug had people losing their data for example.