OpenLiteSpeed would be a great option for things. However, most of the slow reaction of WordPress Sites winds up on the database side - when people are in WooCommerce or some LMS or similar. They should offer drop-in Amazon Aurora with their AWS deployments (to replace MySQL). That would be an even bigger speed upgrade. +1 on OpenLitespeed anyway
I've been going into the cloudways application > cron job management > advanced and this - 0 * * * * cd /home/12345.cloudwaysapps.com/applicationfoldername/public_html && php /home/12345.cloudwaysapps.com/applicationfoldername/public_html/wp_cron.php?doing_wp_cron >/dev/null 2>&1
This in THEORY will run it from the server every hour, as long as I have it right. Make sure your server info and application folder naem are correct there (maybe create a 'basic' one with some nonsense and look at it in 'advanced' to reveal your application and folder names). But this could be a sweet default setting when 'building' your app in Cloudways.
Actually mariaDB 10.0 came out in 2012 and was in testing (and was already legitimate for production) in 2013. It's old enough that it's based on MySQL 5.5 (with some 5.6 code in there) and it seems like that might eventually be a security issue! They are on 10.3.9 at this point.