Firefox Focus Privacy Settings

Go to Settings.

Privacy & Security

Enhanced Tracking Protection

Block ad trackers: On
Block analytic trackers: On
Block social trackers: On
Block other content trackers: On (If you face issues with any website, turn it off)

Cookies and Site Data

Block cookies: Block cross-site cookies

Switching Apps

Use fingerprint to unlock app: On
Stealth: On (Only applicable if the above setting is disabled)

Security

Block potentially dangerous and deceptive sites: On
HTTPS-Only Mode: On

Data Choices

Send usage data: Off
Studies: Off

Search

Search engine

DuckDuckGo or add any other privacy respecting search engine.

Get search suggestions

Off

URL Autocomplete

For top sites: Off