In addition to SearxNG, Librex is another authoritative metasearch engine I use. It is configurable in different ways and includes torrents.

Brave, Quant, Yandex, and Mojeek are other centralized engines that do not rely on Google or Bing TMK.

I also run Yacy.net instance which is decentralized and federated. I crawl the sites I want to include as do the other operators. It is good for non-authoritative searches for topics that might be suppressed in centralized search engines.