I use https://noai.duckduckgo.com/ together with the uBlacklist browser extension. It lets you ban domains from your search results across all major search engines and also lets you subscribe to blacklists compiled by others, such as https://github.com/laylavish/uBlockOrigin-HUGE-AI-Blocklist (I see now that this hasn't been updated since last year, but there are most likely others out there.)