Query for counting emojis in texts

I am currently trying to write a query to count all occurrences of emojis in texts. My documents look like this:

    'docType': 'message',
    'text': 'some string that might have emojis here 🤔'

I think that my best bet would be using regex, but I have not figured out what the regex would be and how I could use it in my query (I tried to look up a few regex for emojis online but they do not seem to work as I want). Thank you so much in advance.

Check if TOKENS() will help
Also checkout FTS Search