FreeBSD packages on Linux distributions? Request for advices

When evaluating operating system for our next server, we have the following needs: 1. An OS with a stable version of Python3 so that machine codes compiled from C/C++/etc. sources from our pip packages won't have to change for an extended period of time seldomly updated. 2. A distribution that comes with latest version of PHP, and in particular PHP 7.4, so that we can invoke external Python and C programs without escaping the command string for the shell using the proc_open function. CentOS is excluded from consideration by 2, and Ubuntu by 1; The update cycle of Fedora is too volatile for most servers, including ours. For some people, whether for practical purposes or not, wants to have foreign packages on their system. One case in particular, would be using FreeBSD ports on Linux. I haven't tried it, but it should be theoretically possible. The point of this question is that: **Q**: I'd like some advice on some tricky areas, and in particular maintaining system integrity.