mustbe3to20signs

Even at this price point isn't it more economic and sustainable to emulate a RISC-V device with already owned hardware. Especially since it's so low powered.

Remember the Cars movies? That's the dystopia leading to a man made world inhabited by sentient Cars /s

You can always try out some premade blocking lists as someone who knows way better than both of us has probably already encountered the same problem.
You can also try to use wildcards with your blocking list as some ad and tracking companies add random alphanumeric characters to their URLs to circumvent blocking.

For optics only:
Use uBlock Origin, choose the object picker and remove the banner.

For real blocking: Use uBlock Origin and block the Google domains as suggested in another answer.