CBDscript

This is a hail Mary but... I'm still running FMP11 (.fp7) because it has continued to work for over a decade... but finally it's hitting the wall of Mac OS updates (upgraded to Mojave and noticed a bunch of glitchy stuff, was going to upgrade to Catalina, but know FMP11 won't work at all). I don't use any web based part of FMP, it lives solely on my computer with simple layouts and manageable amount of records (no more than 2000) but I have dozens of databases that I use across different jobs that I really can't afford to lose access to. Question is, which FMP should I upgrade to (I would rather not have to pay the monthly charge for 19 because I don't need all the bells and whistles) to at least try to keep up with the Mac OS updates? TIA!