I've used Firefox for the last 2 years on Android. In that time I've only had a couple of websites not work, probably because the Dev only tested with one browser. I've enjoyed browsing ad free and a couple of other features that Chrome didn't have at the time, like open tabs in the background when I click on links in other apps.

If you're willing to give Firefox another chance, it's a good time to do so. They've put a lot of effort into performance in the last few releases.

enabling protection from tracking and fingerprinting also speeds up browsing. kill 2 birds with one stone.

as mentioned elsewhere in the comments, it's a good idea to set up the default browser in android to use the maximum of privacy and security settings together with the uBlock Origin addin.

these urls provide some good starting points :

https://www.linuxfestnorthwest.org/2017/sessions/security-an...

https://www.privacy-handbuch.de/handbuch_21.htm

the 2nd url is in german but it has great tips (spurenarm surfen = surf without leaving traces)