Komunitné fórum Firefox pre iOS

I have an iPad mini 2, and it only supports iOS 12.x. I cannot install a newer iOS version. I want to try Firefox to see if it resolves some browsing issues, but the app store requires me to be on iOS 13. I am looking for an older build of Firefox I can install on my device. Where can I find the install files for a version that was supported on iOS 12, as not all of us have hundreds of dollars to upgrade our perfectly fine devices?

I would like to know every single option I could possibly turn on or off, or adjust, or do literally anything to, in order to ensure that my tabs stay the [removed] open. I just returned today to find my 70+ tabs, which I regularly use, completely gone. Normally, if Firefox crashes, it at least has the decency to ask me if I’d like to reopen my tabs, but apparently not this time, for whatever reason. Having to scour through my history to reopen all of my tabs one by one is a frustrating endeavor, and while this is slightly uncommon, it still happens consistently and frequently enough to be a major irritant.

I apologize for my somewhat aggressive tone, but I’m about this close to just using another browser if it keeps pulling this [removed]. So to reiterate, I’d like to know every single possible option I could adjust in some way or to some capacity to ensure that my tabs just stay open.