Zen Browser (FF) on Win and Firefox on iOS (for sync) works well for me. Edge for all M365 related stuff. Still use Chrome for web dev. Not sure what to move on in that regard...
I'm a relatively new web dev and I've been quite happy with Firefox's Web Dev tools. What does Chrome's dev tools give someone that Firefox's doesn't? I can edit css on the fly, see where a css rule is being overwritten, debug javascript, etc.
I use FF for 99% of dev, open Chrome maybe once a quarter. It’s a better browser.