The present simple negative is don't/doesn't + verb:
She doesn't drink coffee.
He doesn't like his job.
Positive
I/we/you/they work/like/do/have.
he/she/it works/likes/does/has.
Negative
I/we/you/they don't (do not) work/like/do/have.
he/she/it doesn't (does not) work/like/do/have.
Remember
I/we/you/they don't ...
he/she/it doesn't ...
I don't like Fred and Fred doesn't like me. (NOT: Fred don't like)
We use don't/doesn't + infinitive (don't like / doesn't speak / doesn't do)
Sarah speaks Spanish, but she doesn't speak Italian (NOT: doesn't speaks)