I am from Germany and it is just sad how many people use these apps from shit companies without thinking, when suitable alternatives exist everywhere. Just use Firefox, it will work for 99,9% without any flaw. I would love to ditch WhatsApp, but could only convinge a few people to change to Signal. It is as easy as downloading a new app to prevent supporting Meta, but that's too much effort for many :-(
Actually as much as I’d love to use Firefox all the time, there are many times it won’t work properly at all. This isn’t entirely Mozilla’s fault, but it is the case.
I've been using Firefox mobile since they enabled extensions on it a little over a year ago on my Pixel 9 and haven't had any performance issues with it. My only complaint is that it doesn't handle form auto fills, or opening links associated with apps as well as chrome, but I think that's because of chrome's inherent ties into the OS. I prefer Opera on desktop for the UI and features.
I use Firefox mobile since they support extensions but I have to admit that mobile browsers that are based on Geckoview are worse than browsers that are based on Blink.
Mozilla said that they want to concentrate their power on the mobile version, but I could not find the statement anymore.