I am more often faced with the fact that newer versions of software do not work on older versions of MacOS. Previously, it was a real quest to find a program file (not on pirated sites, but for example somewhere in official repositories).
Now I was pleasantly surprised that Google finally allows you to download old versions of the browser.
We are opening off site
https://www.google.com/intl/uk/chrome/
At the very bottom, we choose "Other platforms".
Google Chrome - Інші платформи
In the new window, you think you will find everything you need.
Android
iOS
Windows 11/10 64-bit
Windows 10 32-bit
Windows 11 ARM
macOS 11 or later
Linux
Suspended versions
Windows XP
Windows Vista
Windows 8.1/8/7 32-bit
Windows 8.1/8/7 64-bit
Mac 10.6 - 10.8
Mac 10.9
Mac 10.10
Mac 10.11 - 10.12
Mac 10.13 - 10.14
Mac 10.15
In my case, Mac 10.15.7 (19H2026) (Catalina)
Here is a visual screenshot of the .dmg installer and Mac version.