Just yesterday, over in this discussion, https://moodle.org/mod/forum/discuss.php?d=379667#p1530952, I learned that if you get MariaDB 10.2 that you might not need to worry about this Barracuda issue. I found this interesting, and haven't pursued it to know more. I run a VPS, but I still would like to know how folks can run Moodle on a low-cost hosted server.
Installing and upgrading help
Problems installing Moodle 3.6 (Build: 20181203)
གྲོས་བསྟུན་འདི་བསྡམས་ཡོདཔ་ལས་ ལན་གསལ་བརྐྱབ་མི་ཚུགས་