I’ve never worked with mediawiki, but if you’re looking for advice I’d recommend taking the time to figure docker out. Just about anything you want to self host is going to have a docker image for you, so it’s a time investment that will yield immediate and significant rewards.
I’m not a huge fan of network chuck, but if you need a getting started his videos are a pretty good jumping off point: https://youtu.be/eGz9DS-aIeY
What’s missing is a monetization strategy. Any social media platform at a scale larger than a small community is going to require some kind of revenue because servers in the basement just aren’t going to cut it for long.
Users might not like ads, but until they are willing to pay for subscriptions, that’s what they’re stuck with.
I wonder what percentage of Lemmy. World users have actually donated. Hopefully it’s sustainable enough that they can do more than pay for servers, but also hire some admins.