Formatting Multiline Text fields in SPO Library

I have a multiline text column (In a library, not a list) that contains text that has characters such as , { and } that I would like to remove. each, I want to be replaced with a line break and remove characters such as {}  or replace with a space. My code seems to only work on the first instance of these characters. I would love to get idea or suggestions as I know there are limitations around Multiline Text fields.

My Code:

{

  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",

  "elmType": "div",

  "style": {

    "white-space": "pre-line"

  },

  "txtContent": "=if(@currentField, replace(replace(replace(@currentField, ',', '\n'), '{', ''), '}', ''), '')"

}