My issue with SearXNG is that I cannot natively use it on mobile (iOS). Might be a small issue for most but I need to be able to type into my browser’s search bar and it utilize that search engine. Open browser > navigate to search homepage > enter query is a lot slower, especially if I am out and about and need information quickly.
If there is some way to configure this I’d love to hear about it, but Safari on iOS limits you to a handful of search engines. I use DDG today.