You don’t need more English. You need less apologising.

You think you need more English.

More words.
More grammar.
More checking.

But what you’re really missing is permission.

Permission to speak before it’s perfect.
Permission to sound like yourself.
Permission to stop hiding behind “I’m not fluent enough”.

Confidence doesn’t come from vocabulary lists.
It comes from using the English you already have.

Quick win: Say one thing today without checking it first.