don't do it. it's horrible. start calling texting or emailing or having coffee with people more often instead, that's more social and beneficial than social media.
i have a couple of business owner friends who aren't on social media. i say business owners - because they have some strong reasons to use social media but don't. they have minimalistic/ghost/fake accounts and only use them to look at facebook marketplace or to be able to open a link someone else texts them. they're not the type that says they don't use it - they literally never use it, have never invited or connected with any family or friends on it. they've made up names that aren't searchable - like use their middle name mispelled, put minimal information up, and don't connect with any friends or family on it at all - if they need a couple "friends" they'll just invite some distant acquaintenances that aren't connected or some random local jokers to friend them as place holders. so you could do that - get a facebook just to see links or use marketplace - just totally avoid even giving any one you're information or connecting even with your closest people on it.
if forums are college, social media is middle school. the same questions get asked every week, bad answers and suggestions run rampant, and there's a lot of "look at me". basically take the worst that forums had to offer and magnify it a few orders of magnitude...but there's no pros to social media unless you're lazy or physically impaired and can't login to another site.
good luck getting the brat back up and running!