Yes, but did you back port the patches mentioned and then suffer through the Android build system? Also, what architecture, version, swappiness and specs and stuff? Do you have anything else running (Termux with Tor or Orbot, Conversations, Signal/Molly...) or is it all killed immediatelly?
armv7 needs sligthly less RAM on average (so a 2GB 32-bit phone is more sufferable with Firefox) but running individual 32 bit processes on 64 bit userland is less efficient due to really fat shared libraries that now have to be duplicated, which is why some really crappy modern phone manufacturers (ahem, Samsung) decided to do the unimaginable and build an armv7 kernel with the whole non-free vendor partition shebang for a modern armv8.x/armv9.x CPU.