@Peter Debik a few points here:
1. There is a free option for Ubuntu Pro for personal servers. But I would be happy to pay the $500 per year to Ubuntu. That's still cheaper than migrating the whole server every 5 years. The reason for people to chose Ubuntu is the long support periods. And I am...
Ubuntu 18.04 LTS is out of standard support, not end of life. I am using Ubuntu 18.04 LTS with Ubuntu Pro (Ubuntu Pro | Ubuntu) which provides support until 2028. Plesk should still support Ubuntu 18.04. There is a reason people choose Ubuntu.