Other than appealing on reddit.com/appeal (I think this is automated) and the help form, there is no way to get unbanned.

If we’re talking ban evasion? It’s pretty much impossible, at least if you’re not doing FBI levels of security.

They notice your IP is the same as a banned account? Immediate ban.

You try to get around this with a VPN? Immediate shadow ban. It won’t look like you’re banned but you will be.

They notice your device is the same on the mobile app? Immediate ban.

They notice your browser fingerprint is the same (same monitor setup, fonts installed, extensions, etc etc) on any device a banned account exists on? Immediate ban.

Take all of this into account and move to a different city, replace all your devices, and never have the associated accounts banned accounts on any of your devices again?

It will take weeks or months, but you will be permanently banned again. They used advanced machine algorithms to check if you are in similar small communities, type similarly, make similar posts, or use the account at similar times.

The only way to Reddit ban evade would be to move somewhere completely different, completely replace your device setup, never use an old account again, and never interact with more than 1 or 2 smaller communities on the entire website that you were on with one of your banned accounts.

TL;DR: There is essentially nothing you can do. Reddit ALWAYS will eventually find you. If the appeal doesn’t work (it almost always doesn’t) you will NEVER use Reddit again. It’s super saddening.