A few things I wanted to note:
99% of your load is coming from the one Wordpress site travel-lk.com. I would recommend switching to another software other than Wordpress if you want better performance for the whole VPS. If you refuse to get rid of Wordpress, you really should add some more memory.
Decreasing the resources MariaDB and PHP 8.3 are allowed to use helps keep the system from swapping, which increases the speed, but in order to get truly fast speed you should still increase the memory.
Your system is still pretty swapped. Over 1000 MB in swap right now, but it's mostly spamd processes, named, etc. which you probably aren't even using anyways. Just like in point 1 and 2 you really should increase the memory until your system doesn't need to swap at all.