Hello and welcome to the Community, @Thedowntheredoc!
Zapier does have TikTok integrations but they are specifically for leads generation and logging lead events, not posting to TikTok. The TikTok app is on our wishlist of apps to add to Zapier so I’ve added your vote for that. I can’t make any promises on when an integration with the TikTok app (that would allow you to post your videos) would be built but we’ll send you an email notification the minute it is.
For Instagram, there’s a feature request open for the ability to post of Instagram Reels that’s being discussed over here:
I’ve added your vote for that but please do subscribe to that other topic to be kept informed of any updates or workarounds that are shared there.
For the other apps, we’ve also got a feature requests open with the Facebook, YouTube and LinkedIn apps to allow posting of Facebook Reels, YouTube Shorts and videos. So I’ve gone ahead and added your votes to all those feature requests. I can’t give any ETAs on when they’ll be implemented but we’ll email you as soon as they are!
In the meantime you might be able to use the API Request (Beta) actions for the Instagram and LinkedIn apps in order to post Instagram Reels and Videos to LinkedIn. Looking at their API documentation for Instagram you’d want to use the media_publish endpoint (more details here: Reels Posts). And for LinkedIn it looks like they’ve got a videos endpoint you could potentially use (see How to Upload Videos). It’s a more advanced feature so I can’t provide detailed instructions on how to set that up, but the Create an API request in your Zaps (Beta) guide gives some general instructions on how to set up and use it.
Hope that helps. If you do manage to get a workaround in place here please let us know!