Please correct my nepali

I went to the park. I saw a bear. He growled then I left the park. How you say that in nepali?

Ma (tyo) parkmaa gaye. Maile eauta bhaalu dekhe. Bhaalu karayo ani ma parkbaaTa bahiriye. 

More Nepali would be: 

Bhaalu karayo ani ma bhaage. ( The bear growled and I ran away). 

wa (or) 

Bhaalu karyao ani ma kulelaam thoke. ( The bear growled and I ran away for my life )

:) 

I hope that helped. Good luck !