Chrome is a lot more robust and secure against exploitation than Firefox is. This is a very unpopular fact, and every time I point it out the rabid Mozilla people get upset, despite it being the truth.
I use Ungoogled Chromium.
I use Ungoogled Chromium.
For starters, recent Firefox versions do proper process isolation per domain, similar to Chrome, which has long been claimed to be the primary security benefit of Chrome-based browsers.
In addition, the Firefox codebase is partially rewritten in Rust. This effort is incomplete and likely always will be, but it's still significant. Keep in mind that according to Google, 70% of security vulnerabilities in Chrome are related to memory unsafety!