I manage a WordPress site hosted on SiteGround for a friend. The website keeps going down due to updates of some sort or another, and I'm trying to resolve this issue.

SiteGround forces major and minor auto-updates at least every 3 days (if available), and offers the option to autoupdate plugins (which I have on). Inside of the WordPress admin page, none of the plugins are set to auto-update, and I can see some offering to update individually/manually.

My question is this: what is the intended update model for WordPress? Should I just set everything to autoupdate to the extent possible? Although I'm facing issues now, my other software experiences tell me this is a bad idea. I'm used to "update when you want or need a new feature, but nothing will break if you don't", but is this just not how WordPress was designed?

Thanks!