Can’t make phone calls

I can receive phone calls but I can’t make them, I get a server error, anyone know a solution? Fresh install, default phone app, pixel 10a.

DeletedUser743 get a server error,

How is this error presented to you?

DeletedUser743 [...] I get a server error [...]

If it is possible to provide the exact text of the error, that would be helpful.

de0u Server error. Try again later.

DeletedUser743 Is Wi-Fi calling in use? Does this happen if 5G is disabled? Which carrier? Is the device roaming?

DeletedUser743 That 'umbrella'-icon, what is that?

knowing who your carrier is might be helpful