Using Tor likely flags you as suspicious or links your usage to the outgoing IP, which inevitably is going to be connected to other previously banned accounts.

This is a common situation when trying to use Tor with social media that does IP bans or other IP based heuristics.

Look, being real, regardless of whether or not the initial ban was justified (and I believe you when you say it wasn't, because everything is automated now, and there's way too many false hits), you gotta take a step back and realize that trying to get around a ban is a justified reason to ban a new account. Would be anywhere, even on the fediverse. Nobody trying to bypass a ban is trustworthy. The act of trying shows the person is going to engage in activity that they know they shouldn't. Might not be malicious, but that's irrelevant

If you really need to access reddit, and you manage to make an account that doesn't get detected, don't do anything on it but read. No comments, no posts, no votes. Stay purely passive. It's the only way anyone I know that's been fingerprinted has managed to keep an account logged in. Even that's not certain, because once they have a good fingerprint, it gets harder and harder each time you add to it, to work around it.

You have to treat any new account attempt as high security, to divorce it from anything and everything you've done in the past. You'll likely need a new device on top of other obfuscation. Fwiw, they sometimes just wipe accounts connected over tor, or vpn, when you change the exit. It isn't always, but I've known people doing nothing other than passive scrolling to get banned aged that's the only thing they did different.

Good luck, but be aware that it's a lost cause

Slpt, compromise a local org and use a VPN connection to pipe your traffic through their connection.

Less shitty, use a VM, change your IP through your ISP, and don't comment.

Best, avoid Reddit and seek alternatives at every step. Assume it is tainted info.

I'm pretty sure they tag suspicious activity from new accounts and sadly trying to protect your privacy is considered suspicious. If you didnt say anything it could just be some kind of temporary hold but these days you cant use reddit unless they know who you are at some level.

Why are you telling us?

Do you have an acct on any platform whatsoever in which your posts / comments can be read?

I'd be curious to see what your contributions look like.