Hello, I created a site with Dreamweaver that I later integrated into WordPress. I need to install a caching plugin, but the LiteSpeed Cache plugin isn’t recommended. Do you have any advice? Plugins like WP Total Cache aren’t very effective.
Cloudflare, in “full cache” mode, with the appropriate rules, and the “cloudflare” plugin with the API key, which will purge the cache when the site is modified.
That’s still what works best.
Otherwise, W3 Total Cache works quite well too.
For the “beginner” profile or anyone not wanting to make complex tweaks: https://wordpress.org/plugins/wp-super-cache/ which is developed by Automattic the WordPress dev team also does a pretty good job.
I would absolutely use the one @TTY points out to you
Taking advantage of this thread and as an alternative to page‑cache plugins, especially for projects that need superior performance and scalability, you can consider using Valkey as an object cache.
You don’t have to install it on your server manually. You can subscribe to a Cloud Database for Valkey directly from the OVHcloud client area.
It’s a more technical solution than enabling a simple cache plugin, but it provides top‑level control and optimization, especially for high‑traffic sites. You can find more details here 
https://support.us.ovhcloud.com/hc/en-us/articles/21739164595987-Valkey-Tutorial-Boost-your-CMS-from-the-example-of-WordPress
Hope I helped you 
Sergio Turpín