I made an account with Vlad in the username, and then i made another that was related to baseball. Both under the same email. To test it further, i made another account today using the same email and had the name Sankara in it. It is already shadowbanned. Fuck reddit.
Shadowbans are specifically set up so that it isn't inherently obvious that you've been banned. Basically you can visit subs, comment, upvote, and do all the normal stuff you would expect, but your interactions don't actually appear for everyone else who's using the platform. No one else can see your comments/replies, and your upvotes and downvotes dont change the karma on different posts/accounts. The whole point is to make it hard to tell that you've been banned so that you don't just run off and create a new account, and this makes determining whether or not you've been shadowbanned kinda tricky (that's the point after all). The best way that I think is available is just to reply to other people with questions and other such things that would invite a response. If you ask 10 people across 10 subs a simple and innocent question and no one replies to you with an answer, you've probably been shadowbanned.
go to your user profile/post history page when not logged in. If it says you don’t exist or were deleted, you’re shadowbanned.