Firefox DIY

Firefox is actually the best browser for DIY anti-detect - way more customizable than Chrome, although it's harder and not as convenient. Install FoxyProxy for proxy management. In about:config set media.peerconnection.enabled to false (completely kills WebRTC, which Chrome can't do), privacy.resistFingerprinting to true (built-in fingerprint protection), geo.enabled to false, network.dns.disablePrefetch to true. For the full package, install arkenfox user.js - hundreds of privacy settings in one config file, 12K+ stars on GitHub. Add Canvas Blocker extension on top. Still not a real anti-detect with session isolation, but this is the maximum you can get for free. If these settings seem complicated, go to your AI and ask to explain in more detail, it won't take that much time.