This is pretty common. We’ve addressed this several times in different forms. For looking like Chrome from a design standpoint, see these:
https://community.brave.com/t/brave-ui-feedback/33992/3
https://community.brave.com/t/brave-ui-customization-still-lacking/33474
Also remember Brave isn’t currently using unique user agent string:
https://community.brave.com/t/brave-appears-as-chrome-in-service-access-log/6795/2
https://community.brave.com/t/solved-user-agent-string-does-not-contain-any-reference-to-brave-but-gives-the-user-agent-string-of-chrome-dev-59/4560/2
Most importantly, Brave does not send information to Google or anyone else:
https://community.brave.com/t/brave-chromium-google-and-your-data/34395