A direct Google-hosted link for the legacy Chrome 128 installer for macOS 10.15 has been provided in support communities: Google Chrome 128 for macOS 10.15.
As of now, Chrome provides critical security updates and feature updates for Catalina. Download Chrome For Mac 10.15.7
Because macOS 10.15.7 (Catalina) has strict security (Notarization requirements), you might see a pop-up: A direct Google-hosted link for the legacy Chrome
Frequently continues supporting older macOS versions longer than Chrome. Download Chrome For Mac 10.15.7
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Similar to Chrome, these Chromium-based browsers may also require newer macOS versions. Important Notes