WARNING! An advertising company called System1 has now huge impact on data collection of each user using Startpage because System1 has become majority shareholder. Do not use this search machine anymore!
Information:
(English):
https://www.datingnews.com/industry-trends/startpage-new-tools-allow-daters-to-browse-anonymously/
https://restoreprivacy.com/startpage-system1-privacy-one-group/

(German): https://tarnkappe.info/startpage-verkauft-firmen-anteile-an-system1-llc/.
Good alternatives are still DuckDuckgo (is subject to US-law) or with regards to European data protection regulations, the French search machine Qwant.