Kagi's "noncommercial" lens, search.marginalia.nu, and engines that don't parse JS (e.g. Mojeek) can add some variety. Another thing I like doing is adding phrases like "creative commons" to already-long queries to filter out some corporate results, or adding `-gdpr -ccpa -"sell my info"` to limit results to sites made by small orgs and individuals who don't collect enough data or make enough money to warrant compliance measures.