Cost efficient way of pre-loading cache on server

So I’ve been struggling with my woocommerce site and its loading time since it has a lot of content the loading time is very slow for anyone to be interested in waiting for it to load.

I was told that I should use cache programs like litespeed cache, but the problem is that these services cost on monthly basis.

So I thought to my self does anyone have any better solution for this issue of mine?