Firefox here, don't like the idea of Google knowing too much about me and my habits.
FF being open-source (and also the base for other browsers like Tor) gives me a fair bit of confidence its safe & secure. Chrome on the other hand is for sheep swayed by years of it being promoted at every opportunity along the lines "would you also like to install Chrome when installing Adobe Reader, Ccleaner etc " and exists pretty much to line Googles pockets with your data.
eg FF's Sync data is unobtainable by Mozilla, bet Chrome's isn't likewise safe from Google
https://hacks.mozilla.org/2018/11/firefox-sync-privacy/