Here we go again ... 'serious' ... well, that script should report no issues and we are talking about what makes moodle go ... the DB ... so I'd say you need to investigate and fix all of them. If you can't, pass this info to your IT people ... which ever one of those is DB person. Don't let them 'fester' ... those tend to get worse with time and usage and one day might bite ya!
One more suggestion .... install mysqltuner - run it with superuser creds ... look at memory allocations, InnoDB section, and it's recommendations.
One of the items tuner shows ... tables in need of optimization ... even gives you the MySQL (MariaDB as well) command to optimize.
You did migrate off CentOS to AlmaLinux ... config/tweaks to DB server may not have come across or might need revisiting ... higher version of DB server?
'SoS', Ken