Unfortunately, Windows 7 doesn’t have a great solution at this time (and probably never will, since the operating system is no longer supported by Windows as of January 2020, and won’t be supported by Google and others in the near future). That said, there are some ways you can improve the experience in a Chromium-based browser. One such option is to install a font (and set it as your base font) which supports the extended character sets.
For example, below you can see a few screenshots of me installing https://github.com/eosrei/twemoji-color-font#install-on-windows, and setting a new Base Font for Brave in Settings, and then revisiting the getemoji.com domain. This won’t result in colorful emojis in Brave, but it will give you a broader character set.
I hope this helps!
