Fold issues with LazyVim

Can anyone help me? I'm trying to fix the folds for LazyVim, which at the moment look like this...

https://preview.redd.it/jnvysp1mmtbe1.png?width=1574&format=png&auto=webp&s=00a5bfc909c08f3344373cc0a61b8c59b0aeb164

https://preview.redd.it/3wtejmlmmtbe1.png?width=728&format=png&auto=webp&s=a9a7d8f3061cfc5d40e69bd10d0a0a864d460263

The bottom bracket (and in languages like Ruby that use `end`) are hidden and nothing about line numbers folded is being displayed.

I'd like to be able to customise my folds, but I think LazyVim is overriding that somehow.

https://preview.redd.it/g5w1g4wymtbe1.png?width=1058&format=png&auto=webp&s=0bf98a897090e6ff1ac37f8ef3e4b1c3269117f7