IMPORTANT: before installing an eSIM profile on your Google Pixel 6 or 6 Pro, make sure to authorize the use of the eSIM in the Settings beforehand:
1 – On your device, go to Settings
2 – Then choose Network & internet
3 – Next to Mobile network, tap “+” Add
4 – Then tap Download a SIM instead?
5 – “Use 2 SIMs?” tap Yes, and your phone will update
You can now install any eSIM profile on your device

For more information about the eSIM on your Google Pixel 6 or 6 Pro, you can visit this page.