Make sure jnn-pa.googleapis.com isn’t blocked anywhere in your network. It may perhaps be blocked in a filter list you have activated in uBO, DNS, VPN, Firewall, anti-virus, Firefox enhanced tracking protection, etc.

Appending (intext:“modlog” & “instances” & “docs” & “code” & “join lemmy”) to your search query will search most instances. Works with Google, Startpage, SearXNG afaik.