I would just stay with a server of Searx. For example, I'm used to use Searx.me's service[1]. Besides, Searx is free software[2].
If you don't want to use Searx.me's copy of Searx, no problem! There is a list of running instances of Searx[3][4]! REFERENCES 1. https://searx.me 2. https://directory.fsf.org/wiki/Searx 3. https://github.com/asciimoo/searx/wiki/Searx-instances 4. http://stats.searx.oe5tpo.com/
