Here’s a good, detailed article about using (10.15), including the final supported version, security considerations, and workarounds:
Install Chrome on Catalina only for offline use or on a network‑isolated machine. For daily browsing with sensitive data (banking, email), switch to Firefox ESR or upgrade macOS. If you’d like a link to a reputable site like How-To Geek , Macworld , or Ars Technica that covers this in more depth, let me know and I can point you to one. google chrome for macos catalina
Apple ended support for macOS Catalina in November 2022. Google Chrome continued supporting Catalina for nearly two more years. The last version compatible with Catalina is Chrome 116 (released August 2023). Later Chrome versions require macOS Big Sur (11) or newer. Here’s a good, detailed article about using (10