If it has esim enabled a "Sim card Manager" option shows I do believe.
Settings -> Connections -> Sim card Manager
At present, you have to do a full ODIN flash to the complete Android 12 system in order to 'exit' the beta test versions. Yes, you can do this without data loss - but you'll need ODIN, the right firmware for your device (e.g. the network version of the firmware, right country, needs to match the CSC).
Here's a quick sum up of useful info in the last 2 pages I cleaned (some post were very useful, too bad they were mixte with profanity):2.1 Language: XDA is a worldwide community. As a result, what may be OK to say in your part of the world, may not be OK elsewhere. Please don't direct profanity, sexually explicit language or other offensive content toward Members or their work. Conversely, while reading posts from other members, remember that the word you find offensive may not be offensive to the writer. Tolerance is a two-way street.