Tbh, getting into lemmy is quite a bit more complex than e.g. into Instagram or other centralized social media platforms.

Compare this:

• Choose which social media platform to use and land on Instagram
• Download the instagram app from the default store of your phone’s OS
• Create an account
• Done

with:

• Choose which social media platform to use and land on Lemmy
• Choose which app to use. There’s like 20 of them, some great some not so, some active, some abandoned. There’s no guide or anything, so you’ll have to google and/or try 5 of them to find one you like.
• Choose which instance to use. There are literally hundreds of them and you don’t even know where to start. You have no information, but this choice is central to the kind of lemmy experience you will get.
• Google and find join-lemmy.org. Now you got a one-liner for each instance together with user count. So naively you sort by activity and land on lemmy.ml.
• Create an account
• Figure out what .ml stands for.
• Repeat step 3-5 because account transfers between instances don’t work.
• Repeat step 3-5 because you landed on the likes of lemmy.ee or feddit.de, and the instance closed down
• Done, until your instance closes down

Slight hyperbole here, but choosing an app and instance alone is complicated enough to scare away lots of people.