DuckDuckGo is a popular alternative to Google search engine. It aims to protect users' data and provide privacy and security.
DuckDuckGo comes in three different forms:
DDG search engine (website);
DDG browser extension;
DDG app (iOS or Android).
You can download DuckDuckGo browser extension here.
More tutorials on setting up proxies via browsers here.
You can also set up proxies directly on Windows or Mac.