I've been using Tor and Orbot on my laptop and Android for almost a year and I'm totally satisfied on both devices.
On my laptop, I run an aftermarket firewall that I've used for many years, and it doesn't conflict with Tor. However, I'm curious if I should run one with my Android? If yes, which one?
I downloaded a NoRoot firewall app recently, but after configuring it, it wouldn't allow some apps to open, and it slowed the internet even more. That app also states that it operates like a VPN.