'This search engine isn't particularly well equipped to answering queries posed like questions, instead try to imagine some text that might appear in the website you are looking for, and search for that.' That's really old school, in a good way.
There is also https://stract.com/ probably not a daily driver either, it shows some Lemmy results, they have their own crawler and they are open source
Yeah, agreed, Marginalia's more suited to discover small-web type of content.
Another thing that'd be better as a daily driver, but requires manual curation, is to filter out specific domains in your searches. Brave supports that with the Goggles feature, Mojeek calls it Focus. AFAIK Kagi too has a similar feature.
I don't know any search engine that's able to fully exculde paywalled content though.