Saving "{{" in a database and showing it in the view

did you try like below? (ctrl+f5) after in browser

{!! html_entity_decode($variable) !!}

Can you give an example of what this data containing the curly braces actually looks like?

It could be that since your data containing the braces coming from the db aren't actually a part of the hardcoded file.blade.php template, they won't get parsed as blade directives.

Yes I tried exactly like that {!! html_entity_decode($variable) !!}

Just anything between curly braces f.e. {{ product.name }} wouldn't work, { product.name }} will.

If they aren't a part of the actual file.blade.php template, they won't get parsed.

I assume these are part of a Vue template?

If you want these passed to the view as-is you can escape with @

search and replace {{ with @{{ ?

You are using VueJS I assume or at least did not disable it? The problem is that VueJS is seeing a {{ and thinks he needs to parse a variable. This is a known issue and can turn into a vulnerability that opens up your website to XSS. This is discussed in multiple tickets on this forum. One of them is https://laracasts.com/discuss/channels/laravel/overriding-e-or-any-of-the-laravel-helpers?page=1

There are multiple solutions:

1. Disable vuejs at all if you don't use it.
2. Add v-pre to each html element where you do not want to parse vuejs brackets. https://vuejs.org/v2/api/#v-pre
3. Make sure you never have {{ or }} in your variables. In the topic above devonblzx solves it by extending the laravel escape method to make sure {{ and }} are replaced by { { and } }
4. Another solution is to disable delimiters following this comment: https://github.com/vuejs/vue/issues/4223#issuecomment-294864675