Still using my pixel 4a. I refuse to discontinue a perfectly good phone just because the manufacturer decides it's not supported anymore. Hopefully the EU does something about planned obsolesce one day.
> These regulations will empower independent repairers and end-users by ensuring access to spare parts and to the information necessary to repair for at least 7 years after the end of the distribution of a product in the market. Additionally, manufacturers will have to make compatible software updates available for at least 5 years.
https://repair.eu/news/new-eu-rules-smartphones-and-tablets-...
More helpful answer: I think Graphene OS still has security updates for your model (assuming Google doesn't?)