just something

Three mounth ago I had a chance to go to santa barbara city colleage. I think this school is very suitable for me. I do not need spend much money and I can get an opportunity to transfer to a famous university, such as University of California – Berkeley or Los Angles. I know it is very diffcult,but it is not impossible, so I want to try and prove myself. Unfortunately I failed my visa interview because my school made a stupid mistake in my I-20. I have to change my mind. Now I will go to Australia. I think I will get a better future no matter where I am.

My corrected version

Three months ago I got the chance to go to Santa Barbara City College. I think this school is very suited to me, because I do not need spend too much money and I can get the opportunity to transfer to a famous university, such as University of California – Berkeley or Los Angeles. I know it is very difficult, but it is not impossible, so I want to try and prove myself. Unfortunately, I failed my visa interview, because my school made a stupid mistake in my I-20, then I changed my mind. Now I will go to Australia. I think I will have a better future no matter where I am.

Sorry to hear about your visa!

Since you didn't actually go there, the first part might be better in the conditional: - 'I would not have to spend much money', 'I would have the opportunity' etc.

Any qestions, just ask!