Unfortunately most public torrent indexers tend to restrict ability to upload so it's not quite that straightforward.
There's a few you can investigate, let us know how it goes.
- 1337x - Not sure what their registration requirements are, if any.
- ~~Angie Torrents - They seem to have registration/uploads, unsure of any requirements. (their website isn't great, maybe check out the others before trying here)~~ Might be down?
- BitSearch - Mainly a torrent DHT crawler/indexer but they do offer the ability to add new torrents to their search index (both BitSearch and SolidTorrents)
- Demonoid - I'm pretty sure registered users can upload there, keep an eye on when they open registration.
- GloTorrents - They do have specific uploading requirements so probably not for you but maybe will help others, see their forums https://forums.glodls.to/threads/uploading.5/
- SolidTorrents - Mainly a torrent DHT crawler/indexer but they do offer the ability to add new torrents to their search index (both BitSearch and SolidTorrents)
- The Pirate Bay - They have a manual registration process explained in their forums https://pirates-forum.org/Thread-New-TPB-accounts-available
- TorrentFunk - They seem to have registration/uploads, unsure of any requirements.
- YourBittorrent - They seem to have registration/uploads, unsure of any requirements.
- Ext - They have registration/uploads per https://lemmy.dbzer0.com/post/3401527
Also note that many of the russian torrent forums do seem to allow registering & posting torrents but am unsure of their specific requirements. Also non-english. (ruTracker, Rutor, etc.)
EDIT: Added Ext
EDIT: Fixed SolidTorrents link, crossed out Angie Torrents for now