I just buy local eSIM's online when I go abroad now. Lycamobile is usually good around Europe if you land in a country with them. Their UK and Portugal subsidiaries are £5 or €4 / month with 30-50GB in country including 12GB roaming in other European countries. Order before you go and get the eSIM QR code by email. But you must be in the appropriate country to activate.

The Google Fi plans with roaming are either $65/month (100GB) or $20/month + $10/GB. I often end up using quite a bit of data abroad.