Hot Take: I don’t like/recommend liking your own posts but it’s fine if it’s others choice to like their own post, but only liking your own posts and no one else’s is extremely petty/arrogant. Same goes for following no users apart from yourself if you do.
Like, it’s fine to give social actions to others!
For me the like button is an indication of how other people like/agree with your post. Liking your own post makes it seems like your post did better than it actually did, which I don’t like