DuckDuckGo !Bangs offer the following shortcuts for Google's Feeling Lucky (going straight to the first result) search option:

• !fl - http://www.google.com/search?btnI&q={{{s}}}
• !gifl - http://google.com/search?btnI=1&q={{{s}}}
• !gluck - http://www.google.com/search?q={{{s}}}&btnI
• !lucky - http://www.google.com/search?q={{{s}}}&btnI

Unfortunately, they don't work anymore due to redirect notices that get shown. This service enables you to skip redirect notice by altering your search from the original query e.g.:
https://www.google.com/search?q=site:developer.mozilla.org+Object.hasOwn&btnI

To the modified one made against this val's HTTP endpoint:
https://vladimyr-googlefeelinglucky.web.val.run/?q=site:developer.mozilla.org+Object.hasOwn

Additionally, you can define custom search shortcut inside your browser to allow a local bang-like experience:

• Name: Google Feeling Lucky
• Shortcut: !lucky
• URL with %s in place of query: https://vladimyr-googlefeelinglucky.web.val.run/?q=%s