When you think of writing, it feels like there is a burden to sound smart. And the social pressure, the judgement from others and your insecurity make it feel like so.
But in reality, it's okay.
Write like you talk. And be fine with the output. Sure, what you write won't be amazing. It never is. The most accomplished writers still sometimes write trash.
As a writer, you have to accept that you will write thrash before you can write something good enough.
Don't limit your practice. Write everyday because you talk everyday.