give nighlty I try on my second old phone were Firefox was not usable is now working quite well (for the old hardware snapdragon 660 and 4 giga of ram )the only sad part is opening or focusing url bar (which still show home )is painfully laggy and slow
unfortunately dark reader makes Firefox too slow let’s use stylus or https://github.com/m-khvoinitsky/dark-background-light-text-extension